how to create enable disable textbox inside gridview

Question

if (e.Row.DataItem != null)
{
    System.Web.UI.WebControls.TextBox txtGLCode = 
       e.Row.FindControl("txtGLCode") as System.Web.UI.WebControls.TextBox;

    string Enable = e.Row.Cells[4].Text;

    if (Enable == "True")
    {
        txtGLCode.Enabled = false;
        txtGLCode.BackColor = Color.White;
    }
}

Answer 1

If it is an ASP web page you could do it like this

<asp:gridview id="GridView" runat="server" onrowdatabound="GridView_RowDataBound" xmlns:asp="#unknown">
<columns>
  <asp:templatefield headertext="TextBox">
   <itemtemplate>
    <asp:textbox id="TextBox1" runat="server" Text='<%#Bind("ColumnName")%>' />
   </itemtemplate>
  </asp:templatefield>  
</columns>

Where column name is the column from the datatable that you are binding to you GridView. You can the reference the TextBox control using the id from code behind. To hide it you can do it in two ways, one is from the markup which is done like below

<asp:gridview id="GridView" runat="server" onrowdatabound="GridView_RowDataBound" xmlns:asp="#unknown">
<columns>
  <asp:templatefield headertext="TextBox">
   <itemtemplate>
    <asp:textbox id="TextBox1" runat="server" Text='<%#Bind("ColumnName")%>' Visible='<%# iif(Expression, true, false) %>'/>
   </itemtemplate>
  </asp:templatefield>  
</columns>

Expression: Will be what you want to the textbox to be shown when it true. I hope this gives you an insight.