How can I enable textbox nested inside gridview in rowediting event ?

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How can i enable textbox nested inside Gridview in RowEditing event ?

C#

protected void MyGrid_RowEditing(object sender, GridViewEditEventArgs e)
        {
            string CampID;
            //int id = Convert.ToInt32(MyGrid.DataKeys[e.].ToString());
            CampID = (Session["CampaignID"].ToString());
            mf.UpdateStatus(CampID, 'X');
            MyGrid.EditIndex = e.NewEditIndex;
            //string lblOfferType = MyGrid.Rows[e.NewEditIndex].Cells[4].Text;
            GridViewRow currentRow = this.MyGrid.Rows[e.NewEditIndex];

            string lblOfferType = (currentRow.FindControl("lblOffer_Type") as Label).Text;
            //string freeQty = (currentRow.FindControl("txtFree_Qty") as TextBox).Text;
            //string discPercent = (currentRow.FindControl("txtDisc_Percent") as TextBox).Text;
            //TextBox discValue = (currentRow.FindControl("txtDisc_Value") as TextBox);
            //string offerPrice = (currentRow.FindControl("txtOffer_Price") as TextBox).Text;
            //string freeArticle = (currentRow.FindControl("txtFree_Article") as TextBox).Text;

            if (lblOfferType == "VALUE DISCOUNT")
            {
                GridViewRow row = (GridViewRow)((Control)sender).NamingContainer;
                GridViewRow currentRow1 = this.MyGrid.Rows[e.NewEditIndex];
                ((TextBox)MyGrid.Rows[e.NewEditIndex].FindControl("txtDisc_Value")).Enabled = false;
                //discValue.Enabled = true;
                //(currentRow.FindControl("txtDisc_Value") as TextBox).Enabled = true;
                //((TextBox)currentRow.FindControl("txtDisc_Value")).Enabled = true;
            }
}

Error: Object reference not set to an instance.

Please provide the solution.

What I have tried:

C#

protected void MyGrid_RowEditing(object sender, GridViewEditEventArgs e)
        {
            string CampID;
            //int id = Convert.ToInt32(MyGrid.DataKeys[e.].ToString());
            CampID = (Session["CampaignID"].ToString());
            mf.UpdateStatus(CampID, 'X');
            MyGrid.EditIndex = e.NewEditIndex;
            //string lblOfferType = MyGrid.Rows[e.NewEditIndex].Cells[4].Text;
            GridViewRow currentRow = this.MyGrid.Rows[e.NewEditIndex];

            string lblOfferType = (currentRow.FindControl("lblOffer_Type") as Label).Text;
            //string freeQty = (currentRow.FindControl("txtFree_Qty") as TextBox).Text;
            //string discPercent = (currentRow.FindControl("txtDisc_Percent") as TextBox).Text;
            //TextBox discValue = (currentRow.FindControl("txtDisc_Value") as TextBox);
            //string offerPrice = (currentRow.FindControl("txtOffer_Price") as TextBox).Text;
            //string freeArticle = (currentRow.FindControl("txtFree_Article") as TextBox).Text;

            if (lblOfferType == "VALUE DISCOUNT")
            {
                GridViewRow row = (GridViewRow)((Control)sender).NamingContainer;
                GridViewRow currentRow1 = this.MyGrid.Rows[e.NewEditIndex];
                ((TextBox)MyGrid.Rows[e.NewEditIndex].FindControl("txtDisc_Value")).Enabled = false;
                //discValue.Enabled = true;
                //(currentRow.FindControl("txtDisc_Value") as TextBox).Enabled = true;
                //((TextBox)currentRow.FindControl("txtDisc_Value")).Enabled = true;
            }
}

Posted 21-Mar-18 19:14pm

Mgkvp

Updated 22-Mar-18 20:38pm

virang_21

v2

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dkamble 10358990 · Answer 1 · 2018-03-21T22:23:00

Solution 1

try this
TextBox txtDisc_Value =(TextBox)MyGrid.Rows[e.NewEditIndex].FindControl("txtDisc_Value");
txtDisc_Value.Enabled = false;

Posted 21-Mar-18 22:23pm

dkamble 10358990

Updated 21-Mar-18 22:24pm

v2

Mgkvp · Answer 2 · 2018-03-21T22:43:00

Solution 2

Thanks, but this error is showing after executing your line of code:-

"Object reference not set to an instance of an object."

Posted 21-Mar-18 22:43pm

Mgkvp

Comments

dkamble 10358990 22-Mar-18 5:02am

use RowDataBound Event

https://stackoverflow.com/questions/20892053/how-to-enable-or-disable-text-box-in-gridview-using-c-sharp

Member 13439076 22-Mar-18 5:10am

Thank you!!! It work for me

Richard Deeming 23-Mar-18 13:10pm

If you want to reply to a solution, click the "Have a Question or Comment?" button under that solution. DO NOT post your reply as a new "solution".

Delete this non-solution.

Mgkvp · Answer 3 · 2018-03-22T19:09:00

Solution 3

Please provide better solution to the problem.
Thanks in Advance.

Posted 22-Mar-18 19:09pm

Mgkvp

Comments

Richard Deeming 23-Mar-18 13:10pm

And this one.

Mgkvp · Answer 4 · 2018-03-22T20:40:00

<asp:TemplateField HeaderText="Discount Value">
<ItemTemplate>
<asp:Label ID="lblDisc_Value" runat="server" Text='<%# Bind("Disc_Value") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtDisc_Value" runat="server" Text='<%# Bind("Disc_Value") %>'>
</asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
 
I am able to find the value of lblDisc_Value but unable to Enable txtDisc_Value to false or true