asp.net的GridView通用分页程序(Oracle)
2007-03-27 15:54
531 查看
分页是数据库类的重要程序之一， 分页对于大数据量的往往需要用到存贮过程。这个研究网上也有不少，而本文的则是普通的SQL语句的分页程序。Oracle的操作在.net下不同与MS SQL，所以使用的是DataSet填充GridView来实现。程序包含通常使用的功能：
Oracle驱动为微软提供的，可以参考前面几篇文章获取完整说明。
1 分页
2 首页，上一页，下一页，尾页，第？页，共？页，记录数 跳转功能
3 页面显示的隔行不同色，并且提供了鼠标经过时当前行变化颜色的功能
4 选择某一列
5 删除选定列，并提示确认删除信息
6 更新选定列
7 对列进行排序(升/降)
运行效果图：不能贴图，所拷贝了一下，效果不是很好，但是大体上可以看明白了。
首页上一页 下一页 尾页 第 1 页 共 11 页 总共 107 条 跳转
建立过程如下：
新建页面：
添加相关的GridView控件和LinkButton等。
我的GridView选择AllowPaging = true(允许分页); AllowSort = true(允许排序);<AlternatingRowStyle BackColor="LightSteelBlue" />(行颜色切换);AutoGenerateColumns=true(自动产生列表);等等
详细的可以参考下面的代码部分。比如添加AutoGenerateSelect,AutoGenerateEdit,AutoGenerateDelete等。
这里的AutoGenerateDelete方式有部分改变，你可以参考代码修改。然后就是添加相应的事件进行处理，在cs文件里可以参考。
文中的Javascript是用来鼠标经过该记录时高亮显示以示区别的。
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script language="javascript" type="text/javascript">
if (!objbeforeItem)
...{
var objbeforeItem=null;
var objbeforeItembackgroundColor=null;
}
function ItemOver(obj)
...{
if(objbeforeItem)
...{
objbeforeItem.style.backgroundColor = objbeforeItembackgroundColor;
}
objbeforeItembackgroundColor = obj.style.backgroundColor;
objbeforeItem = obj;
obj.style.backgroundColor = "#FF8000";
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>分页测试程序</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AllowSorting="True" OnSorting="GridView1_Sorting" AutoGenerateEditButton="True" OnRowCancelingEdit="GridView1_RowCancelingEdit" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" AutoGenerateSelectButton="True" OnRowDataBound="GridView1_RowDataBound" OnSelectedIndexChanging="GridView1_SelectedIndexChanging" OnRowDeleting="GridView1_RowDeleting">
<AlternatingRowStyle BackColor="LightSteelBlue" />
<PagerSettings Visible="False" />
<Columns>
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<asp:LinkButton ID="LnkbtnDel" runat="server" CommandName="Delete" Text="删除" OnClientClick="return confirm('确认要删除吗？');" Width="40px"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:LinkButton ID="lnkbtnFirst" runat="server" OnClick="PagerButtonClick">首页</asp:LinkButton><asp:LinkButton ID="lnkbtnPre" runat="server" OnClick="PagerButtonClick">上一页</asp:LinkButton>
<asp:LinkButton ID="lnkbtnNext" runat="server" OnClick="PagerButtonClick">下一页</asp:LinkButton>
<asp:LinkButton ID="lnkbtnLast" runat="server" OnClick="PagerButtonClick">尾页</asp:LinkButton>
<asp:Label ID="lblCurrentIndex" runat="server" Text="第?页"></asp:Label>
<asp:Label ID="lblPageCount" runat="server" Text="共?页"></asp:Label>
<asp:Label ID="lblRecordCount" runat="server" Text="记录数"></asp:Label>
<asp:TextBox ID="txtJumpPage" runat="server" Width="24px">1</asp:TextBox>
<asp:LinkButton ID="lnkbtnJumpPage" runat="server" OnClick="lnkbtnJumpPage_Click" >跳转</asp:LinkButton></div>
</form>
</body>
</html>
2 处理程序部分：
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.OracleClient;
public partial class _Default : System.Web.UI.Page
...{
protected void Page_Load(object sender, EventArgs e)
...{
if (!IsPostBack)
...{
fillGridView();
}
}
/**//// <summary>
/// 填充GridView
/// </summary>
protected void fillGridView()
...{
DataSet ds = new DataSet();
ds = GetData();
// 将ds作为GridView的数据源
GridView1.DataSource = ds;
// 绑定数据
GridView1.DataBind();
getRefSet(ds);
}
/**//// <summary>
/// 分页的相关参数设置
/// </summary>
/// <param name="ds"></param>
protected void getRefSet(DataSet ds)
...{
lblCurrentIndex.Text = "第 " + (GridView1.PageIndex + 1).ToString() + " 页";
lblPageCount.Text = "共 " + GridView1.PageCount.ToString() + " 页";
lblRecordCount.Text = "总共 " + ds.Tables[0].Rows.Count.ToString() + " 条";
if (ds.Tables[0].Rows.Count == 0)
...{
lnkbtnFirst.Visible = false;
lnkbtnPre.Visible = false;
lnkbtnNext.Visible = false;
lnkbtnLast.Visible = false;
lblCurrentIndex.Visible = false;
lblPageCount.Visible = false;
lblRecordCount.Visible = false;
}
else if (GridView1.PageCount == 1)
...{
lnkbtnFirst.Visible = false;
lnkbtnPre.Visible = false;
lnkbtnNext.Visible = false;
lnkbtnLast.Visible = false;
}
// 设置LinkButton此时对应的参数
lnkbtnFirst.CommandArgument = "1";
lnkbtnPre.CommandArgument = (GridView1.PageIndex == 0 ? "1" : GridView1.PageIndex.ToString());
lnkbtnNext.CommandArgument = (GridView1.PageCount == 1 ? GridView1.PageCount.ToString() : (GridView1.PageIndex + 2).ToString());
lnkbtnLast.CommandArgument = GridView1.PageCount.ToString();
}
/**//// <summary>
/// 跳转到指定页面，页面参数由txtJumpPage获取
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void lnkbtnJumpPage_Click(object sender, EventArgs e)
...{
// 减1 是因为系统默认首页的PageIndex为0，为了符合人们的正常思维而使用
GridView1.PageIndex = int.Parse(txtJumpPage.Text) - 1;
// 更新当前页面显示值
lblCurrentIndex.Text = "第 " + (GridView1.PageIndex + 1).ToString() + " 页";
// 重新绑定
fillGridView();
GridView1.DataBind();
}
/**//// <summary>
/// 首页，上一页，下一页，尾页公用的点击程序
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void PagerButtonClick(object sender, EventArgs e)
...{
// CommandArgument对应该对象在页面初始化后的设定值
GridView1.PageIndex = Convert.ToInt32(((LinkButton)sender).CommandArgument) - 1;
fillGridView();
GridView1.DataBind();
}
/**//// <summary>
/// 设置排序方式
/// </summary>
public SortDirection GridViewSortDirection
...{
get
...{
if (ViewState["sortDirection"] == null)
...{
ViewState["sortDirection"] = SortDirection.Ascending;
}
return (SortDirection)ViewState["sortDirection"];
}
set ...{ ViewState["sortDirection"] = value; }
}
/**//// <summary>
/// 排序
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
...{
string sortExpression = e.SortExpression;
// 必须有一个空格"Desc"不行
string Desc = " Desc";
string Asc = " Asc";
if (GridViewSortDirection == SortDirection.Ascending)
...{
GridViewSortDirection = SortDirection.Descending;
SortGridView(sortExpression,Desc);
}
else
...{
GridViewSortDirection = SortDirection.Ascending;
SortGridView(sortExpression, Asc);
}
}
/**//// <summary>
/// 排序
/// </summary>
/// <param name="sortExpression"></param>
/// <param name="direction">排序方式</param>
private void SortGridView(string sortExpression, string direction)
...{
DataTable dt = GetData().Tables[0];
DataView dv = new DataView(dt);
dv.Sort = sortExpression + direction;
GridView1.DataSource = dv;
GridView1.DataBind();
}
/**//// <summary>
/// 转换SQL查询结果为DataSet
/// </summary>
/// <returns>ds</returns>
private DataSet GetData()
...{
OracleConnection conn = new OracleConnection("Data Source=INFOPLAT;User ID=system;Password=manager;");
OracleCommand cmd = new OracleCommand();
cmd.Connection = conn;
String strSql = "select * from hr.employees";
cmd.CommandText = strSql;
cmd.CommandType = CommandType.Text;
// 创建数据集
DataSet ds = new DataSet();
try
...{
conn.Open();
// 创建适配器
OracleDataAdapter ad = new OracleDataAdapter();
// 适配器命令
ad.SelectCommand = cmd;
// 填充到数据集(DataSet)
ad.Fill(ds);
}
catch (Exception ex)
...{
Response.Write("数据库错误，错误原因：" + ex.Message);
Response.End();
}
finally
...{
// 释放占有资源
conn.Close();
}
return ds;
}
/**//// <summary>
/// 编辑行
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
...{
GridView1.EditIndex = e.NewEditIndex;
fillGridView();
GridView1.DataBind();
}
/**//// <summary>
/// 取消更新
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
...{
GridView1.EditIndex = -1;
fillGridView();
GridView1.DataBind();
}
/**//// <summary>
/// 更新
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
...{
// Cells[2]是因为前面有2列，并且最好需要id为主键。
string id = ((TextBox)GridView1.Rows[e.RowIndex].Cells[2].Controls[0]).Text;
string newtxt = ((TextBox)GridView1.Rows[e.RowIndex].Cells[3].Controls[0]).Text;
string strSql1 = "UPDATE hr.employees SET first_name ='" + newtxt + "' WHERE employee_id =" + id;
OracleConnection conn = new OracleConnection("Data Source=INFOPLAT;User ID=system;Password=manager;");
OracleCommand cmd = new OracleCommand();
cmd.CommandText = strSql1;
cmd.CommandType = CommandType.Text;
cmd.Connection = conn;
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
GridView1.EditIndex = -1;
fillGridView();
GridView1.DataBind();
}
/**//// <summary>
/// 鼠标经过时改变当前行的颜色
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
...{
// 调用javascript
e.Row.Attributes["onmouseover"] = "ItemOver(this)";
}
/**//// <summary>
/// 选择行
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)
...{
// Cells[2]是因为前面有2列，并且最好需要id为主键。
string id = GridView1.Rows[e.NewSelectedIndex].Cells[2].Text;
Response.Write(id);
// 自己的处理代码
fillGridView();
GridView1.DataBind();
}
/**//// <summary>
/// 删除行
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
...{
// Cells[2]是因为前面有2列，并且最好需要id为主键。
string id = GridView1.Rows[e.RowIndex].Cells[2].Text;
string strSql1 = "DELETE FROM hr.employees WHERE employee_id =" + id;
OracleConnection conn = new OracleConnection("Data Source=INFOPLAT;User ID=system;Password=manager;");
OracleCommand cmd = new OracleCommand();
cmd.CommandText = strSql1;
cmd.CommandType = CommandType.Text;
cmd.Connection = conn;
conn.Open();
try
...{
cmd.ExecuteNonQuery();
}
catch (Exception ex)
...{
}
finally
...{
conn.Close();
}
GridView1.EditIndex = -1;
fillGridView();
GridView1.DataBind();
}
}
测试通过。
使用其他表查询时只要更换SQL语句即可。
对于鼠标悬停时可以用如下代码修改而不需要上面的javascript：
//当鼠标移到的时候设置该行颜色为""， 并保存原来的背景颜色
e.Row.Attributes.Add("onmouseover", "currentcolor=this.style.backgroundColor;this.style.backgroundColor='#FF8000'");
//当鼠标移走时还原该行的背景色
e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=currentcolor");
/**//// <summary>
/// 鼠标经过时改变当前行的颜色
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
...{
//当鼠标移到的时候设置该行颜色为""， 并保存原来的背景颜色
e.Row.Attributes.Add("onmouseover", "currentcolor=this.style.backgroundColor;this.style.backgroundColor='#FF8000'");
//当鼠标移走时还原该行的背景色
e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=currentcolor");
}
当然程序还有很多不足，但是这个也是我的一个测试程序。大家继续改进。
Oracle驱动为微软提供的，可以参考前面几篇文章获取完整说明。
1 分页
2 首页，上一页，下一页，尾页，第？页，共？页，记录数 跳转功能
3 页面显示的隔行不同色，并且提供了鼠标经过时当前行变化颜色的功能
4 选择某一列
5 删除选定列，并提示确认删除信息
6 更新选定列
7 对列进行排序(升/降)
运行效果图：不能贴图，所拷贝了一下，效果不是很好，但是大体上可以看明白了。
| EMPLOYEE_ID | FIRST_NAME | LAST_NAME | PHONE_NUMBER | HIRE_DATE | JOB_ID | SALARY | COMMISSION_PCT | MANAGER_ID | DEPARTMENT_ID | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Edit Select | 删除 | 100 | Steven | King | SKING | 515.123.4567 | 1987-6-17 0:00:00 | AD_PRES | 24000 | 90 | ||
| Edit Select | 删除 | 101 | Neena | Kochhar | NKOCHHAR | 515.123.4568 | 1989-9-21 0:00:00 | AD_VP | 17000 | 100 | 90 | |
| Edit Select | 删除 | 102 | Lex | De Haan | LDEHAAN | 515.123.4569 | 1993-1-13 0:00:00 | AD_VP | 17000 | 100 | 90 | |
| Edit Select | 删除 | 103 | Alexander | Hunold | AHUNOLD | 590.423.4567 | 1990-1-3 0:00:00 | IT_PROG | 9000 | 102 | 60 | |
| Edit Select | 删除 | 104 | Bruce | Ernst | BERNST | 590.423.4568 | 1991-5-21 0:00:00 | IT_PROG | 6000 | 103 | 60 | |
| Edit Select | 删除 | 105 | David | Austin | DAUSTIN | 590.423.4569 | 1997-6-25 0:00:00 | IT_PROG | 4800 | 103 | 60 | |
| Edit Select | 删除 | 106 | Valli | Pataballa | VPATABAL | 590.423.4560 | 1998-2-5 0:00:00 | IT_PROG | 4800 | 103 | 60 | |
| Edit Select | 删除 | 107 | Diana | Lorentz | DLORENTZ | 590.423.5567 | 1999-2-7 0:00:00 | IT_PROG | 4200 | 103 | 60 | |
| Edit Select | 删除 | 108 | Nancy | Greenberg | NGREENBE | 515.124.4569 | 1994-8-17 0:00:00 | FI_MGR | 12000 | 101 | 100 | |
| Edit Select | 删除 | 109 | Daniel | Faviet | DFAVIET | 515.124.4169 | 1994-8-16 0:00:00 | FI_ACCOUNT | 9000 | 108 | 100 |
建立过程如下：
新建页面：
添加相关的GridView控件和LinkButton等。
我的GridView选择AllowPaging = true(允许分页); AllowSort = true(允许排序);<AlternatingRowStyle BackColor="LightSteelBlue" />(行颜色切换);AutoGenerateColumns=true(自动产生列表);等等
详细的可以参考下面的代码部分。比如添加AutoGenerateSelect,AutoGenerateEdit,AutoGenerateDelete等。
这里的AutoGenerateDelete方式有部分改变，你可以参考代码修改。然后就是添加相应的事件进行处理，在cs文件里可以参考。
文中的Javascript是用来鼠标经过该记录时高亮显示以示区别的。
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script language="javascript" type="text/javascript">
if (!objbeforeItem)
...{
var objbeforeItem=null;
var objbeforeItembackgroundColor=null;
}
function ItemOver(obj)
...{
if(objbeforeItem)
...{
objbeforeItem.style.backgroundColor = objbeforeItembackgroundColor;
}
objbeforeItembackgroundColor = obj.style.backgroundColor;
objbeforeItem = obj;
obj.style.backgroundColor = "#FF8000";
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>分页测试程序</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AllowSorting="True" OnSorting="GridView1_Sorting" AutoGenerateEditButton="True" OnRowCancelingEdit="GridView1_RowCancelingEdit" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" AutoGenerateSelectButton="True" OnRowDataBound="GridView1_RowDataBound" OnSelectedIndexChanging="GridView1_SelectedIndexChanging" OnRowDeleting="GridView1_RowDeleting">
<AlternatingRowStyle BackColor="LightSteelBlue" />
<PagerSettings Visible="False" />
<Columns>
<asp:TemplateField ShowHeader="False">
<ItemTemplate>
<asp:LinkButton ID="LnkbtnDel" runat="server" CommandName="Delete" Text="删除" OnClientClick="return confirm('确认要删除吗？');" Width="40px"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:LinkButton ID="lnkbtnFirst" runat="server" OnClick="PagerButtonClick">首页</asp:LinkButton><asp:LinkButton ID="lnkbtnPre" runat="server" OnClick="PagerButtonClick">上一页</asp:LinkButton>
<asp:LinkButton ID="lnkbtnNext" runat="server" OnClick="PagerButtonClick">下一页</asp:LinkButton>
<asp:LinkButton ID="lnkbtnLast" runat="server" OnClick="PagerButtonClick">尾页</asp:LinkButton>
<asp:Label ID="lblCurrentIndex" runat="server" Text="第?页"></asp:Label>
<asp:Label ID="lblPageCount" runat="server" Text="共?页"></asp:Label>
<asp:Label ID="lblRecordCount" runat="server" Text="记录数"></asp:Label>
<asp:TextBox ID="txtJumpPage" runat="server" Width="24px">1</asp:TextBox>
<asp:LinkButton ID="lnkbtnJumpPage" runat="server" OnClick="lnkbtnJumpPage_Click" >跳转</asp:LinkButton></div>
</form>
</body>
</html>
2 处理程序部分：
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.OracleClient;
public partial class _Default : System.Web.UI.Page
...{
protected void Page_Load(object sender, EventArgs e)
...{
if (!IsPostBack)
...{
fillGridView();
}
}
/**//// <summary>
/// 填充GridView
/// </summary>
protected void fillGridView()
...{
DataSet ds = new DataSet();
ds = GetData();
// 将ds作为GridView的数据源
GridView1.DataSource = ds;
// 绑定数据
GridView1.DataBind();
getRefSet(ds);
}
/**//// <summary>
/// 分页的相关参数设置
/// </summary>
/// <param name="ds"></param>
protected void getRefSet(DataSet ds)
...{
lblCurrentIndex.Text = "第 " + (GridView1.PageIndex + 1).ToString() + " 页";
lblPageCount.Text = "共 " + GridView1.PageCount.ToString() + " 页";
lblRecordCount.Text = "总共 " + ds.Tables[0].Rows.Count.ToString() + " 条";
if (ds.Tables[0].Rows.Count == 0)
...{
lnkbtnFirst.Visible = false;
lnkbtnPre.Visible = false;
lnkbtnNext.Visible = false;
lnkbtnLast.Visible = false;
lblCurrentIndex.Visible = false;
lblPageCount.Visible = false;
lblRecordCount.Visible = false;
}
else if (GridView1.PageCount == 1)
...{
lnkbtnFirst.Visible = false;
lnkbtnPre.Visible = false;
lnkbtnNext.Visible = false;
lnkbtnLast.Visible = false;
}
// 设置LinkButton此时对应的参数
lnkbtnFirst.CommandArgument = "1";
lnkbtnPre.CommandArgument = (GridView1.PageIndex == 0 ? "1" : GridView1.PageIndex.ToString());
lnkbtnNext.CommandArgument = (GridView1.PageCount == 1 ? GridView1.PageCount.ToString() : (GridView1.PageIndex + 2).ToString());
lnkbtnLast.CommandArgument = GridView1.PageCount.ToString();
}
/**//// <summary>
/// 跳转到指定页面，页面参数由txtJumpPage获取
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void lnkbtnJumpPage_Click(object sender, EventArgs e)
...{
// 减1 是因为系统默认首页的PageIndex为0，为了符合人们的正常思维而使用
GridView1.PageIndex = int.Parse(txtJumpPage.Text) - 1;
// 更新当前页面显示值
lblCurrentIndex.Text = "第 " + (GridView1.PageIndex + 1).ToString() + " 页";
// 重新绑定
fillGridView();
GridView1.DataBind();
}
/**//// <summary>
/// 首页，上一页，下一页，尾页公用的点击程序
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void PagerButtonClick(object sender, EventArgs e)
...{
// CommandArgument对应该对象在页面初始化后的设定值
GridView1.PageIndex = Convert.ToInt32(((LinkButton)sender).CommandArgument) - 1;
fillGridView();
GridView1.DataBind();
}
/**//// <summary>
/// 设置排序方式
/// </summary>
public SortDirection GridViewSortDirection
...{
get
...{
if (ViewState["sortDirection"] == null)
...{
ViewState["sortDirection"] = SortDirection.Ascending;
}
return (SortDirection)ViewState["sortDirection"];
}
set ...{ ViewState["sortDirection"] = value; }
}
/**//// <summary>
/// 排序
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
...{
string sortExpression = e.SortExpression;
// 必须有一个空格"Desc"不行
string Desc = " Desc";
string Asc = " Asc";
if (GridViewSortDirection == SortDirection.Ascending)
...{
GridViewSortDirection = SortDirection.Descending;
SortGridView(sortExpression,Desc);
}
else
...{
GridViewSortDirection = SortDirection.Ascending;
SortGridView(sortExpression, Asc);
}
}
/**//// <summary>
/// 排序
/// </summary>
/// <param name="sortExpression"></param>
/// <param name="direction">排序方式</param>
private void SortGridView(string sortExpression, string direction)
...{
DataTable dt = GetData().Tables[0];
DataView dv = new DataView(dt);
dv.Sort = sortExpression + direction;
GridView1.DataSource = dv;
GridView1.DataBind();
}
/**//// <summary>
/// 转换SQL查询结果为DataSet
/// </summary>
/// <returns>ds</returns>
private DataSet GetData()
...{
OracleConnection conn = new OracleConnection("Data Source=INFOPLAT;User ID=system;Password=manager;");
OracleCommand cmd = new OracleCommand();
cmd.Connection = conn;
String strSql = "select * from hr.employees";
cmd.CommandText = strSql;
cmd.CommandType = CommandType.Text;
// 创建数据集
DataSet ds = new DataSet();
try
...{
conn.Open();
// 创建适配器
OracleDataAdapter ad = new OracleDataAdapter();
// 适配器命令
ad.SelectCommand = cmd;
// 填充到数据集(DataSet)
ad.Fill(ds);
}
catch (Exception ex)
...{
Response.Write("数据库错误，错误原因：" + ex.Message);
Response.End();
}
finally
...{
// 释放占有资源
conn.Close();
}
return ds;
}
/**//// <summary>
/// 编辑行
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
...{
GridView1.EditIndex = e.NewEditIndex;
fillGridView();
GridView1.DataBind();
}
/**//// <summary>
/// 取消更新
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
...{
GridView1.EditIndex = -1;
fillGridView();
GridView1.DataBind();
}
/**//// <summary>
/// 更新
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
...{
// Cells[2]是因为前面有2列，并且最好需要id为主键。
string id = ((TextBox)GridView1.Rows[e.RowIndex].Cells[2].Controls[0]).Text;
string newtxt = ((TextBox)GridView1.Rows[e.RowIndex].Cells[3].Controls[0]).Text;
string strSql1 = "UPDATE hr.employees SET first_name ='" + newtxt + "' WHERE employee_id =" + id;
OracleConnection conn = new OracleConnection("Data Source=INFOPLAT;User ID=system;Password=manager;");
OracleCommand cmd = new OracleCommand();
cmd.CommandText = strSql1;
cmd.CommandType = CommandType.Text;
cmd.Connection = conn;
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
GridView1.EditIndex = -1;
fillGridView();
GridView1.DataBind();
}
/**//// <summary>
/// 鼠标经过时改变当前行的颜色
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
...{
// 调用javascript
e.Row.Attributes["onmouseover"] = "ItemOver(this)";
}
/**//// <summary>
/// 选择行
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)
...{
// Cells[2]是因为前面有2列，并且最好需要id为主键。
string id = GridView1.Rows[e.NewSelectedIndex].Cells[2].Text;
Response.Write(id);
// 自己的处理代码
fillGridView();
GridView1.DataBind();
}
/**//// <summary>
/// 删除行
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
...{
// Cells[2]是因为前面有2列，并且最好需要id为主键。
string id = GridView1.Rows[e.RowIndex].Cells[2].Text;
string strSql1 = "DELETE FROM hr.employees WHERE employee_id =" + id;
OracleConnection conn = new OracleConnection("Data Source=INFOPLAT;User ID=system;Password=manager;");
OracleCommand cmd = new OracleCommand();
cmd.CommandText = strSql1;
cmd.CommandType = CommandType.Text;
cmd.Connection = conn;
conn.Open();
try
...{
cmd.ExecuteNonQuery();
}
catch (Exception ex)
...{
}
finally
...{
conn.Close();
}
GridView1.EditIndex = -1;
fillGridView();
GridView1.DataBind();
}
}
测试通过。
使用其他表查询时只要更换SQL语句即可。
对于鼠标悬停时可以用如下代码修改而不需要上面的javascript：
//当鼠标移到的时候设置该行颜色为""， 并保存原来的背景颜色
e.Row.Attributes.Add("onmouseover", "currentcolor=this.style.backgroundColor;this.style.backgroundColor='#FF8000'");
//当鼠标移走时还原该行的背景色
e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=currentcolor");
/**//// <summary>
/// 鼠标经过时改变当前行的颜色
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
...{
//当鼠标移到的时候设置该行颜色为""， 并保存原来的背景颜色
e.Row.Attributes.Add("onmouseover", "currentcolor=this.style.backgroundColor;this.style.backgroundColor='#FF8000'");
//当鼠标移走时还原该行的背景色
e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=currentcolor");
}
当然程序还有很多不足，但是这个也是我的一个测试程序。大家继续改进。
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