Display the selected gridview row in asp.net

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In Gridview as follows

C#

Subject     coursedate     Candidates   Checkbox

English      12 May 14         10       Checkbox1
Tamil        13 May 14         20       Checkbox2

When i click the checkbox in Gridview i want to display the selected checkbox gridview row in textbox.

i have one textbox as follows;

In textbox i want output as follows

C#

English 12 May 14 10 Tamil 13 May 14 20 (Retrive from the gridview)

for that how can i do in asp.net using c#.

Posted 14-May-14 2:57am

Member 8054539

Updated 14-May-14 2:58am

Thanks7872

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Peter Leow · Answer 1 · 2014-05-14T03:46:00

adapt from this example:
aspx page

XML

<asp:GridView ID="GridView1" runat="server">
    <Columns>
        <asp:TemplateField>

            <ItemTemplate>
                <asp:CheckBox ID="CheckBox1" runat="server" oncheckedchanged="CheckBox1_CheckedChanged" AutoPostBack="true" />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>
<asp:TextBox ID="TextBox1" runat="server" Width="532px"></asp:TextBox>

code behind

using System;
using System.Web.UI.WebControls;
using System.Data;

public partial class Default14 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (IsPostBack == true)
            return;
        DataTable dtTemp = new DataTable();
        dtTemp.Columns.Add("Student ID");
        dtTemp.Columns.Add("First Name");
        dtTemp.Columns.Add("Last Name");
        dtTemp.Rows.Add("1", "Peter", "Leow");
        dtTemp.Rows.Add("2", "James", "Song");
        dtTemp.Rows.Add("3", "Mick", "Sam");
        dtTemp.Rows.Add("4", "MAry", "Cool");
        GridView1.DataSource = dtTemp;
        GridView1.DataBind(); 
    }

    protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
    {
        CheckBox chk = (CheckBox)sender;
        TextBox1.Text = "";
        foreach (GridViewRow row in GridView1.Rows)
        {
            CheckBox chkBox = (CheckBox)row.FindControl("CheckBox1");
            if (chkBox != null && chkBox.Checked)
            {
                TextBox1.Text += " " + row.Cells[1].Text.ToString() + " " + row.Cells[2].Text.ToString() + " " + row.Cells[3].Text.ToString();
            }
        }
        
    } 
}