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新增及删除Grid行

2007-10-10 17:58 155 查看

示例效果如下

点击新增按钮 Grid将增加一空行用于输入

点击删除按钮将删除该行记录并重新绑定Grid

相关代码如下

HTML部分

@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="PrivateWork_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<title>Grid 新增及删除一行</title>

</head>

<body>

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" >

<asp:TemplateField HeaderText="pID">

<asp:TextBox ID="txt_pID" runat="server" Width="98"

Text='<%# Bind("pID") %>'></asp:TextBox>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="pName">

<asp:TextBox ID="txt_pName" runat="server" Width="98"

Text='<%# Bind("pName") %>' ></asp:TextBox>

</ItemTemplate>

</asp:TemplateField>

<asp:TemplateField>

<asp:Button ID="btn_NewAdd" runat="server" Text="新增"

OnClick="btn_NewAdd_Click" />

</HeaderTemplate>

<asp:Button ID="btn_Delete" runat="server" Text="删除"

CommandArgument="<%# GridView1.Rows.Count %>"

OnClick="btn_Delete_Click" />

</ItemTemplate>

</asp:TemplateField>

</Columns>

</asp:GridView>

<asp:Button ID="btn_SaveAndShow" runat="server" Text="保存并显示数据在GridView2"

OnClick="btn_SaveAndShow_Click" /><br />

<asp:GridView ID="GridView2" runat="server" Width="200">

</asp:GridView>

</form>

</body>

</html>

后台部分

using System;

using System.Data;

using System.Configuration;

using System.Collections;

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;

public partial class PrivateWork_Default : System.Web.UI.Page

{

Page_Load 构造DataTable#region Page_Load 构造DataTable

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

DataTable dt = new DataTable();

dt.Columns.Add("pID", typeof(string));

dt.Columns.Add("pName", typeof(string));

DataRow dr = dt.NewRow();

dr["pID"] = "";

dr["pName"] = "";

dt.Rows.Add(dr);

ViewState.Add("mydt", dt);

this.GridView1.DataSource = dt;

this.GridView1.DataBind();

}

#endregion

Grid 新增一行#region Grid 新增一行

protected void btn_NewAdd_Click(object sender, EventArgs e)

{

DataTable dt = (DataTable)ViewState["mydt"];

dt.Rows.Clear();

//保存页面输入

for (int i = 0; i < this.GridView1.Rows.Count; i++)

{

string str_pID = ((TextBox)this.GridView1.Rows[i].FindControl("txt_pID")).Text.Trim();

string str_pName = ((TextBox)this.GridView1.Rows[i].FindControl("txt_pName")).Text.Trim();

DataRow dr = dt.NewRow();

dr["pID"] = str_pID;

dr["pName"] = str_pName;

dt.Rows.Add(dr);

}

//新增空行

DataRow drEmpty = dt.NewRow();

drEmpty["pID"] = "";

drEmpty["pName"] = "";

dt.Rows.Add(drEmpty);

ViewState["mydt"] = dt;

this.GridView1.DataSource = dt;

this.GridView1.DataBind();

}

#endregion

Grid 删除一行#region Grid 删除一行

protected void btn_Delete_Click(object sender, EventArgs e)

{

//删除指定行

int intIndex = Convert.ToInt32(((Button)sender).CommandArgument);

DataTable dt = (DataTable)ViewState["mydt"];

dt.Rows.RemoveAt(intIndex);

//确保至少有一空行以使GridView1能显示

if (dt.Rows.Count == 0)

{

DataRow drEmpty = dt.NewRow();

drEmpty["pID"] = "";

drEmpty["pName"] = "";

dt.Rows.Add(drEmpty);

}

ViewState["mydt"] = dt;

this.GridView1.DataSource = dt;

this.GridView1.DataBind();

}

#endregion

保存并显示按钮#region 保存并显示按钮

protected void btn_SaveAndShow_Click(object sender, EventArgs e)

{

DataTable dt = (DataTable)ViewState["mydt"];

dt.Rows.Clear();

for (int i = 0; i < this.GridView1.Rows.Count; i++)

{

string str_pID = ((TextBox)this.GridView1.Rows[i].FindControl("txt_pID")).Text.Trim();

string str_pName = ((TextBox)this.GridView1.Rows[i].FindControl("txt_pName")).Text.Trim();

DataRow dr = dt.NewRow();

dr["pID"] = str_pID;

dr["pName"] = str_pName;

dt.Rows.Add(dr);

}

ViewState["mydt"] = dt;

this.GridView2.DataSource = dt;

this.GridView2.DataBind();

}

#endregion

}

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标签： textbox server delete string button asp

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