findcontrol of checkbox is unable to find, but its ID already defined unable to solve the problem, please help me for solving problems

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C#

private void updatetono()
   {
         DataTable dtpack = (DataTable)Session["gridviewupdate"];
           DataTable dtudate = new DataTable();
           for (int i = 0; dtpack.Rows.Count > i; i++)
        {
            CheckBox checks = (CheckBox)grdno.Rows[i].Cells[0].FindControl("gridviewtrans");
            if(checks.Checked)
            {
                dtudate = lo.updatehomeunactive(dtpack.Rows[i]["PkgName"].ToString());
                                             
            }
            else
            {

            }
        }

    

}


    protected void Updateno_Click(object sender, EventArgs e)
    {
        updatetono();
    }


<asp:GridView ID="grdno" runat="server" CellSpacing="2" Width="30%" CellPadding="4"
                    AutoGenerateColumns="False" ForeColor="#333333" Height="86px" alignment="left"
                    Style="margin-top: 3px">
                    <columns>
                            <asp:TemplateField HeaderText="Select">
                                <itemtemplate>
                                    <asp:CheckBox ID="gridviewtrans" runat="server"/>
                                </itemtemplate>
                            
                            <asp:TemplateField HeaderText="S.No." HeaderStyle-HorizontalAlign="Left">
                                <itemtemplate>
                                    <%# Container.DataItemIndex+1 %>
                                </itemtemplate>
                                <HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                            
                            <asp:BoundField DataField="PkgName" HeaderText="PkgName" />
                            <asp:BoundField DataField="HomeActive" HeaderText="Status" />
                        </columns>
                      
                      <br />
                     <asp:Button ID="Updateno" runat="server"
                    Text="Update To No" onclick="Updateno_Click" />
                <br />

Aspx page code

ASP.NET

<asp:GridView ID="grdno" runat="server" CellSpacing="2" Width="30%" CellPadding="4"
                    AutoGenerateColumns="False" ForeColor="#333333" Height="86px" alignment="left"
                    Style="margin-top: 3px">
                    <Columns>
                            <asp:TemplateField HeaderText="Select">
                                <ItemTemplate>
                                    <asp:CheckBox ID="gridviewtrans" runat="server"/>
                                </ItemTemplate>
                            </asp:TemplateField>
                            <asp:TemplateField HeaderText="S.No." HeaderStyle-HorizontalAlign="Left">
                                <ItemTemplate>
                                    <%# Container.DataItemIndex+1 %>
                                </ItemTemplate>
                                <HeaderStyle HorizontalAlign="Left"></HeaderStyle>
                            </asp:TemplateField>
                            <asp:BoundField DataField="PkgName" HeaderText="PkgName" />
                            <asp:BoundField DataField="HomeActive" HeaderText="Status" />
                        </Columns>
                      </asp:GridView>
                      <br />
                 &nbsp;&nbsp;&nbsp;&nbsp;<asp:Button ID="Updateno" runat="server"
                    Text="Update To No" onclick="Updateno_Click" />
                <br />

Posted 14-Dec-15 0:06am

Member 12175752

Updated 14-Dec-15 0:14am

F-ES Sitecore

v2

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Animesh Datta · Answer 1 · 2015-12-14T01:04:00

Solution 2

Hello ,
Modify your code and try this way

private void updatetono()
   {
         DataTable dtpack = (DataTable)Session["gridviewupdate"];
           DataTable dtudate = new DataTable();
           for (int i = 0; dtpack.Rows.Count > i; i++)
        {
           //change here
           CheckBox checks = (CheckBox)grdno.Rows[i].FindControl("gridviewtrans"); 
            if(checks != null && checks.Checked)
            {
                dtudate = lo.updatehomeunactive(dtpack.Rows[i]["PkgName"].ToString());                                             
            }
            else
            {
 
            }
        }  
 }

Thanks

Posted 14-Dec-15 1:04am

Animesh Datta

Updated 14-Dec-15 1:08am

v2

Comments

Member 12175752 15-Dec-15 0:44am

still i am unable to find control of checkbox in gridview. i have tried all the solutions, but find control of checkbox in grid is coming false after i check the checkbox. please help me as soon as possible

Member 12175752 15-Dec-15 0:44am

please review my above code and help me

Animesh Datta 15-Dec-15 1:06am

I check the code and it runs fine , check whether 'dtpack' contains any data or not .

Member 12175752 15-Dec-15 1:12am

yes sir, it contains data, data is coming fine in dtpack but it is not finding controls of checkbox in gridview. when i checks checkbox it showing false hen also.

Animesh Datta 15-Dec-15 1:20am

Have u implement below line of code to get the CheckBox Control inside gridview
CheckBox checks = (CheckBox)grdno.Rows[i].FindControl("gridviewtrans");

Member 12175752 15-Dec-15 1:21am

yes i have implemented but it's coming false , then also

Member 12175752 15-Dec-15 3:30am

any solutions.. anybody please?

Animesh Datta 15-Dec-15 4:41am

the above code runs successfully . I can easily get the checkbox id from the above code . no error found .

Member 12175752 15-Dec-15 7:37am

yes i have resolved he problem now, at staring i have used two check boxes yes and no, when i click on yes this grid was populating with records. there is a button below it for updating those records in database.
but my problem was that i was clicking on yes checkbox and its property autopostback was true, due to which it was not reading the findcontrol of this checkbox inside gridview.
now i changed the functionality user have to select checkbox and click on button then grid will populate and he can perform further action, so i removed autopostback property of checkbox . Thanks for ur support sir

Animesh Datta 16-Dec-15 0:30am

Glad to help you dear ..