Find Control Of text box in header of radgrid

[Shubham]

Hi All,

I am using telerik Rad Grid in my applilcation.I have placed a text box in the header of one column of this rad grid.

I am able to find the control of header and text box but my problem is that I am not able to get the text typed in that text box.
Here I am typing the code how I am finding the control of header and text box.

Dim header as Gridheaderitem=TryCast(RadGrid1.mastertableview.GetItemTypes(Getitem.header)(0),Gridheaderitem)
Dim textbox as textbox=Ctype(header.findControl("textbox"),textbox)
Dim strtext as string=textbox.text

Please see this if anyone is able to solve this problem...thanx in advance.

shubham

[Todd Anglin]

Hello shubham-

Sorry to hear you're having trouble with this scenario. The most common problem in cases like this is "timing." That is, trying to access the value of a control at the wrong time in the page lifecycle. 

Can you please provide a small code snippet (using the "Fromat Code Block" forum tool - next to the spell check) showing where you use the code you supplied (i.e. what event this code is contained in)? That will help with debugging.

Also, can you elaborate on your scenario? If I better understand what it is you're trying to do, I may be able to point you at existing resources that will more quickly help you solve the problem.

Hope to help more-

Todd

[Shubham]

Hi Todd,

I am using this code in the button- click event.This link- button is also placed in header with the textbox.and I using onclick property
of this link button.
Actually I want to show the text typed in the header in one of the column of my radgrid that's why I want to retrieve the
value of text typed in the textbox placed in the header of radgrid.


Thanks
Shubham

[Shubham]

Hi Todd,

Here is my code......

In ascx  page

<telerik:RadGrid ID="rgVerbatim" DataSourceID="ObjVerbatimswithCodes" runat="server"
                        AllowFilteringByColumn="True" AllowPaging="True" AllowSorting="True" GridLines="None"
                        Skin="Office2007" Width="1320px" Height="700px" Style="margin-right: 0px" PageSize="30">
                        <HeaderContextMenu>
                            <CollapseAnimation Type="OutQuint" Duration="200"></CollapseAnimation>
                        </HeaderContextMenu>
                        <PagerStyle NextPageText="Next" PrevPageText="Previous" Mode="NextPrevNumericAndAdvanced" />
                        <MasterTableView DataSourceID="ObjVerbatimswithCodes" Width="100%" AutoGenerateColumns="False">
                            <RowIndicatorColumn>
                                <HeaderStyle Width="20px"></HeaderStyle>
                            </RowIndicatorColumn>
                            <ExpandCollapseColumn>
                                <HeaderStyle Width="20px"></HeaderStyle>
                            </ExpandCollapseColumn>
                            <Columns>
                                <telerik:GridTemplateColumn UniqueName="TemplateColumn" AllowFiltering="False">
                                    <HeaderTemplate>
                                        <asp:TextBox ID="txtCodeNumber" runat="server" Width="39px" />
                                        <asp:LinkButton ID="lnkAddCode" runat="server" Text="Add Bulk Code" OnClick="lnkAddCode_Click" />/
                                        <asp:LinkButton ID="lnkRemoveCode" runat="server" Text="Remove Bulk Code" />
                                    </HeaderTemplate>
                                    <ItemTemplate>
                                        <asp:HiddenField ID="hdnCodes" runat="server" Value='<%#Eval("Codes")%>' />
                                        <asp:DataList ID="dlTextboxes" runat="server" DataSourceID="ObjMaxCodeCountDs" OnPreRender="dlTextboxes__prerender">
                                            <ItemTemplate>
                                                <asp:TextBox ID="txtCodes" runat="server" Width="35px" />
                                            </ItemTemplate>
                                        </asp:DataList>
                                    </ItemTemplate>
                                </telerik:GridTemplateColumn>
                                <telerik:GridBoundColumn DataField="Verbatim" HeaderText="Verbatim" UniqueName="Verbatim">
                                    <HeaderStyle Width="900px" />
                                </telerik:GridBoundColumn>
                                <telerik:GridBoundColumn DataField="Frequency" HeaderText="Frequency" UniqueName="Frequency">
                                    <HeaderStyle Width="120px" />
                                </telerik:GridBoundColumn>
                            </Columns>
                        </MasterTableView>
                        <HeaderStyle Font-Bold="True" Font-Italic="False" Font-Overline="False" Font-Strikeout="False"
                            Font-Underline="False" Wrap="True" />
                        <ClientSettings>
                            <Scrolling AllowScroll="True" UseStaticHeaders="True" />
                        </ClientSettings>
                        <FilterMenu>
                            <CollapseAnimation Type="OutQuint" Duration="200"></CollapseAnimation>
                        </FilterMenu>
                    </telerik:RadGrid>

In ascx.vb page--

  Protected Sub lnkAddCode_Click(ByVal sender As Object, ByVal e As System.EventArgs)
    
        Dim header As GridHeaderItem = TryCast(rgVerbatim.MasterTableView.GetItems(GridItemType.Header)(0), GridHeaderItem)
        Dim txtCodeNumber As TextBox = CType(header.FindControl("txtCodeNumber"), TextBox)
        Dim str as string= txtCodeNumber.text
    End Sub

Plese check if now you can help me.

Thanks

[jon]

I have this same issue with the same code scenario.  Was there a solution to this issue of getting the value from the textboxes in the header?

Thanks.

[Princy]

 Hello Jon,

 I tried a code snimilar to this for a similar scenario and that worked fine for me.

Vb.Net:

Protected Sub lnkAddCode_Click(sender As Object, e As EventArgs)
    Dim header As GridHeaderItem = TryCast(RadGrid1.MasterTableView.GetItems(GridItemType.Header)(0), GridHeaderItem)
    Dim txtCodeNumber As TextBox = DirectCast(header.FindControl("txtCodeNumber"), TextBox)
    Dim str As String = txtCodeNumber.Text
End Sub

And the ASPX is:

<telerik:RadGrid ID="RadGrid1" runat="server" GridLines="None" AutoGenerateColumns="false"
    DataSourceID="SqlDataSource1" AutoGenerateEditColumn="true" >
    <MasterTableView Width="100%" DataKeyNames="EmployeeID" CommandItemDisplay="Top"
        EditMode="PopUp">
        <Columns>
           <telerik:GridTemplateColumn>
                <HeaderTemplate>
                    <asp:TextBox ID="txtCodeNumber" runat="server" Width="39px" />
                   <asp:LinkButton ID="lnkAddCode" runat="server" Text="Add Bulk Code" OnClick="lnkAddCode_Click" />
                </HeaderTemplate>
                <ItemTemplate>
                    <asp:TextBox ID="TextBox1" runat="server" Text='<%#Bind("FirstName") %>' Width="39px" />
                </ItemTemplate>
            </telerik:GridTemplateColumn>
        </Columns>
    </MasterTableView>
</telerik:RadGrid>

Give a try with this code and see whether it helps.

Vb.Net:

Protected Sub lnkAddCode_Click(sender As Object, e As EventArgs)
    Dim btn As LinkButton = DirectCast(sender, LinkButton)
    Dim header As GridHeaderItem = DirectCast(btn.NamingContainer, GridHeaderItem)
    ' access HeaderItem
    Dim txtCodeNumber As TextBox = DirectCast(header.FindControl("txtCodeNumber"), TextBox)
    Dim str As String = txtCodeNumber.Text
End Sub

Thanks,
Princy.