How to get the Values of Selected Row from a Gridview using ASP.NET-优快云博客

本文介绍了如何使用C#代码从GridView中获取选定行的值，并将其显示在文本框中。通过设置GridView的AutoGenerateColumns属性为False，添加绑定字段，实现数据的绑定和展示。

In this Article you can learn how to get the values of selected row from a Gridview and display the values in textBoxes using C# code.

Selecting a Row in Gridview

Add one Gridview and bind a Data using SqlDataSource.and Add three Textboxes to display a data in Textboxes when the GridviewRow is Selected.

Ste the Gridview AutoGenerateColumns property to 'False'.

You will need to set the Bound column in order to see the text in the cells of the grid view control

<asp:GridView runat ="Server" ID="Gridview1" AutoGenerateColumns="False" DataSourceID="SqlDataSource1"AutoGenerateSelectButton="True" OnSelectedIndexChanged="Gridview1_SelectedIndexChanged Width="306px" Height="137px">
    <Columns >
    <asp:BoundField HeaderText ="Rowid" DataField ="Rowid" />
    <asp:BoundField HeaderText ="Name" DataField ="Name" />
    <asp:BoundField HeaderText ="Marks" DataField ="marks" />
    </Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:shakeerConnectionString %>" SelectCommand="SELECT * FROM [emp]">
</asp:SqlDataSource>

In Gridview Properties set 'AutoGenerateSelectButton=True'.See below image of Gridview after setting 'AutoGenerateSelectButton=True'.

See the Desing view of your Gridview.you will find a Hyperlink with a text as 'Select'

Selecting Row:

Selecting row event is fired when you make a click on the select link. If you need any particular item in that row you can easily select it using the cells property:
In Gridview Events double Click on SelectedIndexChanged Event and write the below code:

    protected void Gridview1_SelectedIndexChanged(object sender, EventArgs e)
    {
        txtrowid.Text = Gridview1.SelectedRow.Cells[1].Text;
        txtname.Text = Gridview1.SelectedRow.Cells[2].Text;
        txtmarks.Text = Gridview1.SelectedRow.Cells[3].Text;   //only for boundField

}

Complete .asp source code:

<%@ 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">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView runat ="Server" ID="Gridview1" AutoGenerateColumns="False" DataSourceID="SqlDataSource1" AutoGenerateSelectButton="True" OnSelectedIndexChanged="Gridview1_SelectedIndexChanged" left: 266px; position: GridLines="None" Width="306px" Height="137px">

<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:shakeerConnectionString %>"
SelectCommand="SELECT * FROM [emp]"></asp:SqlDataSource>
<br />
<br />

<asp:TextBox ID="txtrowid" runat="server" Style="z-index: 101; left: 365px; position: absolute;top: 251px"></asp:TextBox>

<asp:TextBox ID="txtname" runat="server" Style="z-index: 102; left: 365px; position: absolute;top: 283px"></asp:TextBox>

<asp:TextBox ID="txtmarks" runat="server" Style="z-index: 103; left: 365px; position: absolute; top: 315px"></asp:TextBox>

<asp:Label ID="Label1" runat="server" Style="z-index: 107; left: 305px; position: absolute;top: 253px" Text="RowId"></asp:Label>

<asp:Label ID="Label2" runat="server" Style="z-index: 105; left: 303px; position: absolute;
top: 287px" Text="Name"></asp:Label>
<asp:Label ID="Label3" runat="server" Style="z-index: 106; left: 306px; position: absolute;
top: 318px" Text="Marks"></asp:Label>

</div>
</form>
</body>
</html>

In .aspx.cs code:

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;

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

    }
    protected void Gridview1_SelectedIndexChanged(object sender, EventArgs e)
    {
        txtrowid.Text = Gridview1.SelectedRow.Cells[1].Text;
        txtname.Text = Gridview1.SelectedRow.Cells[2].Text;
        txtmarks.Text = Gridview1.SelectedRow.Cells[3].Text;

}
}