Get specific column on click of ASP.Net GridView cell using C# and VB.Net

Hi mahjoubi,

Please refer below sample.

MasterPage

<asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>

HTML

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" OnRowDataBound="OnRowDataBound">
        <Columns>
            <asp:BoundField DataField="Name" HeaderText="Name" ItemStyle-Width="150" />
            <asp:BoundField DataField="Country" HeaderText="Country" ItemStyle-Width="150" />
        </Columns>
    </asp:GridView>
    <input type="hidden" id="HeadertTxt" name="HeadertTxt" value="" />
    <asp:Button ID="btnGet" Text="Get" runat="server" OnClick="OnGet" Style="display: none;" />
    <script type="text/javascript">
        function GetHeaderText(txt) {
            alert(txt);
            document.getElementById("HeadertTxt").value = txt;
            document.getElementById('<%=btnGet.ClientID%>').click();
        }
    </script>
</asp:Content>

Namespace

C#

using System.Data;

VB.Net

Imports System.Data

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        System.Data.DataTable dt = new System.Data.DataTable();
        dt.Columns.AddRange(new DataColumn[3]{new System.Data.DataColumn("Id"),
                                            new System.Data.DataColumn("Name"),
                                            new System.Data.DataColumn("Country") }); 
        dt.Rows.Add(1, "John Hammond", "United States");
        dt.Rows.Add(2, "Mudassar Khan", "India");
        dt.Rows.Add(3, "Suzanne Mathews", "France");
        dt.Rows.Add(4, "Robert Schidner", "Russia");
        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
}

protected void OnRowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        var cel = e.Row.Cells;
        for (var i = 0; i < cel.Count ; i++)
        {
            TableCell cell = cel[i];
            if (i < cel.Count - 1)
                cell.Attributes.Add("onclick", "javascript: GetHeaderText('" + cel[i + 1].Text + "')");
            else
                cell.Attributes.Add("onclick", "javascript: GetHeaderText('" + cel[i].Text + "')");
            cell.Attributes.Add("style", "cursor: pointer;");
        }
    }
}

protected void OnGet(Object sender, EventArgs e)
{
    string rowText = (Request.Form["HeadertTxt"].ToString());
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    If Not Me.IsPostBack Then
        Dim dt As New System.Data.DataTable()
        dt.Columns.AddRange(New System.Data.DataColumn(2) {
                        New System.Data.DataColumn("Id"),
                        New System.Data.DataColumn("Name"),
                        New System.Data.DataColumn("Country")})
        dt.Rows.Add(1, "John Hammond", "United States")
        dt.Rows.Add(2, "Mudassar Khan", "India")
        dt.Rows.Add(3, "Suzanne Mathews", "France")
        dt.Rows.Add(4, "Robert Schidner", "Russia")
        GridView1.DataSource = dt
        GridView1.DataBind()
    End If
End Sub
Protected Sub OnRowDataBound(sender As Object, e As GridViewRowEventArgs) Handles GridView1.RowDataBound
    If e.Row.RowType = DataControlRowType.DataRow Then
        Dim cells = e.Row.Cells
        For i = 0 To cells.Count - 1 Step 1
            Dim cell As TableCell = cells(i)
            If i < cells.Count - 1 Then
                cell.Attributes.Add("onclick", "javascript: GetHeaderText('" + cells(i + 1).Text + "')")
            Else
                cell.Attributes.Add("onclick", "javascript: GetHeaderText('" + cells(i).Text + "')")
            End If
            cell.Attributes.Add("style", "cursor: pointer;")
        Next
    End If
End Sub

Protected Sub OnGet(sender As Object, e As EventArgs)
    Dim rowText As String = (Request.Form("HeadertTxt").ToString)
End Sub

Screenshot