手工创建datagrid数据列/模板列/按钮事件+简单的数据操作类（asp.net）

1）创建datagrid数据列/模板列/按钮的操作类：
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
namespace Webtest
{
/// <summary>
/// DataGridColumn 的摘要说明。
/// </summary>
public class DataGridCols
{
public void DataGridColumn()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
public static void CreateCols(System.Web.UI.WebControls.DataGrid DataGrid1,string dataField,string headerText,int i)
{
BoundColumn cm=new BoundColumn();
cm.DataField=dataField;
cm.HeaderText=headerText;
cm.HeaderStyle.Width=i;
DataGrid1.Columns.Add(cm);
}
public static void CreateButton(System.Web.UI.WebControls.DataGrid DataGrid1,string commandName,string strText)
{
ButtonColumn bc=new ButtonColumn();
bc.ButtonType=ButtonColumnType.PushButton;
bc.CommandName=commandName;
bc.HeaderText="操作";
bc.Text=strText;
DataGrid1.Columns.Add(bc);
}
public static void CreateTemplateCol(System.Web.UI.WebControls.DataGrid DataGrid1,string ID,string headerText)
{
TemplateColumn tm=new TemplateColumn();
tm.ItemTemplate=new DDListCol(ID);
tm.HeaderText=headerText;
DataGrid1.Columns.Add(tm);
}
}
}

2）简单的数据库操作类
using System;
using System.Data;
using System.Data.SqlClient;
namespace Webtest
{
/// <summary>
/// SqlAccess 的摘要说明。
/// </summary>
public class SqlAccess
{
// string strConn="server=;user id=sa;password=;database=clothing";
// DataSet ds;
// SqlDataAdapter da;
public SqlAccess()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
public static void fillDataSet(string strConnection,string strSql,DataSet ds,string tableName)
{
if (strConnection==null || strConnection.Length==0)
{
throw new ArgumentNullException( "strConnection" );
}
if (strSql==null || strSql.Length==0)
{
throw new ArgumentNullException( "strSql" );
}
if (ds==null)
{
throw new ArgumentNullException( "DataSet" );
}
if (tableName==null || tableName.Length==0)
{
throw new ArgumentNullException( "tableName" );
}
using(SqlConnection conn=new SqlConnection(strConnection))
{
conn.Open();
SqlDataAdapter da =new SqlDataAdapter(strSql,conn);
da.Fill(ds,tableName);
conn.Close();
}
}
public static void fillDataSet(SqlConnection conn,string strSql,DataSet ds,string tableName)
{
if (conn==null)
{
throw new ArgumentNullException( "SqlConnection" );
}
if (strSql==null || strSql.Length==0)
{
throw new ArgumentNullException( "strSql" );
}
if (ds==null)
{
throw new ArgumentNullException( "DataSet" );
}
if (tableName==null || tableName.Length==0)
{
throw new ArgumentNullException( "tableName" );
}
using(SqlDataAdapter da =new SqlDataAdapter(strSql,conn))
{
da.Fill(ds,tableName);
conn.Close();
}
}
public static DataSet getDataSet(string strConnection,string strSql)
{
if (strConnection==null || strConnection.Length==0)
{
throw new ArgumentNullException( "strConnection" );
}
if (strSql==null || strSql.Length==0)
{
throw new ArgumentNullException( "strSql" );
}
using(SqlConnection conn=new SqlConnection(strConnection))
{
DataSet ds=new DataSet();
conn.Open();
SqlDataAdapter da =new SqlDataAdapter(strSql,conn);
da.Fill(ds);
conn.Close();
return ds;
}
}
public static DataSet getDataSet(SqlConnection conn,string strSql)
{
if (conn==null)
{
throw new ArgumentNullException( "SqlConnection" );
}
if (strSql==null || strSql.Length==0)
{
throw new ArgumentNullException( "strSql" );
}
using(SqlDataAdapter da =new SqlDataAdapter(strSql,conn))
{
DataSet ds=new DataSet();
da.Fill(ds);
conn.Close();
return ds;
}
}
public static int executeNonQuery(string strConnection,string strSql)
{
if (strConnection==null || strConnection.Length==0)
{
throw new ArgumentNullException( "strConnection" );
}
if (strSql==null || strSql.Length==0)
{
throw new ArgumentNullException( "strSql" );
}
using(SqlConnection conn=new SqlConnection(strConnection))
{
SqlCommand sqlCmd=new SqlCommand(strSql,conn);
int i= sqlCmd.ExecuteNonQuery();
conn.Close();
return i;
}
}
public static int executeNonQuery(SqlConnection conn,string strSql)
{
if (conn==null)
{
throw new ArgumentNullException( "SqlConnection" );
}
if (strSql==null || strSql.Length==0)
{
throw new ArgumentNullException( "strSql" );
}
using(SqlCommand sqlCmd=new SqlCommand(strSql,conn))
{
int i=sqlCmd.ExecuteNonQuery();
conn.Close();
return i;
}
}
}
}
3）创建模板列的类（可以创建n种模板列）
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace Webtest
{
//DropDownList模板列
public class DDListCol : ITemplate
{
string ID;
public DDListCol(string id)
{
this.ID=id;
}
public void InstantiateIn(Control container)
{
DropDownList dpl = new DropDownList();
dpl.ID=this.ID ;
container.Controls.Add(dpl);
}
}
//CheckBox模板列
public class CheckBoxCol : ITemplate
{
string ID;
public CheckBoxCol(string id)
{
this.ID=id;
}
public void InstantiateIn(Control container)
{
CheckBox checkbox = new CheckBox();
checkbox.ID=this.ID ;
container.Controls.Add(checkbox);
}
}
}
4）实例：创建数据源和创建datagrid数据列
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
namespace Webtest
{
/// <summary>
/// WebForm1 的摘要说明。
/// </summary>
public class WebForm1 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.DataGrid DataGrid1;
protected System.Web.UI.WebControls.Button Button1;

private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}

/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.DataGrid1.ItemCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_ItemCommand);
this.DataGrid1.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemDataBound);
this.Button1.Click += new System.EventHandler(this.Button1_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void Button1_Click(object sender, System.EventArgs e)
{
initData();
}
string strconn="server=;user id=sa;password=;database=clothing";
private void initData()
{

string strSql="select * from tblProduct";
DataSet ds=new DataSet();
ds=SqlAccess.getDataSet(this.strconn,strSql);
this.DataGrid1.DataSource=ds.Tables[0].DefaultView;
DataGridCols.CreateCols(this.DataGrid1,"Pro_ID","叙号",50);
DataGridCols.CreateCols(this.DataGrid1,"Pro_Code","编号",50);
DataGridCols.CreateCols(this.DataGrid1,"Pro_Name","名称",100);
DataGridCols.CreateTemplateCol(this.DataGrid1,"Type","类型");
DataGridCols.CreateButton(this.DataGrid1,"del","删除");
this.DataGrid1.DataBind();
}
private void DataGrid1_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
{
string strSql="select * from tblProduct_Type";
DataSet ds=new DataSet();
ds=SqlAccess.getDataSet(this.strconn,strSql);
if(e.Item.ItemType==ListItemType.Item||e.Item.ItemType==ListItemType.AlternatingItem)
{
DropDownList ddl=(DropDownList)e.Item.FindControl("Type");
ddl.DataSource=ds.Tables[0];
ddl.DataTextField="Type_Name";
ddl.DataValueField="Type_ID";
ddl.DataBind();
ddl.Items.FindByValue(Convert.ToString(DataBinder.Eval(e.Item.DataItem,"Type_ID"))).Selected=true;
}
}
private void DataGrid1_ItemCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
if(e.CommandName=="del")
{
SqlConnection conn=new SqlConnection(this.strconn);
SqlCommand comm=new SqlCommand("delete tblProduct where Pro_ID=@id",conn);
SqlParameter parm1=new SqlParameter("@id",SqlDbType.Int);
parm1.Value=this.DataGrid1.DataKeys[e.Item.ItemIndex];
comm.Parameters.Add(parm1);
conn.Open();
comm.ExecuteNonQuery();
conn.Close();
this.initData();
}
}
}
}