Question

I have created datatable kept in session & assigned to gridview.I have to extract those records ,for that i have written code as follows but its giving value as null :

//To find gridview in Formview1
    GridView GridView1 = (GridView)Formview1.FindControl("GridView1");
    GridView1.DataSource = (DataTable)Session["tabdetails"];
    GridView1.DataBind();

    string str, str1, str2, str3, str4, str5, str6;
    for (int i = 0; i < GridView1.Rows.Count; i++)
    {
        str = GridView1.Rows[i].Cells[0].Text;
        str1 = GridView1.Rows[i].Cells[1].Text;
        str3 = GridView1.Rows[i].Cells[2].Text;
        str4 = GridView1.Rows[i].Cells[3].Text;
        str5 = GridView1.Rows[i].Cells[4].Text;
    }

Please suggest me to do right changes?
Thank you.
Asp.net c#

Answer 1

Use data keys to store the values that you need to retrieve.

<asp:GridView ID="GridView1" runat="server" DataKeyNames="SomeColumnName, AnotherColumnName, SomeOtherColumnName" ... >

And in your code behind:

for (int i = 0; i < GridView1.Rows.Count; i++)
{
    GridViewRow row = GridView1.Rows[i];
    string str = GridView1.DataKeys[row.RowIndex]["SomeColumnName"];
}