or

The error will not disappear until I tried to select one of the item inside the dropdownlist.<telerik:RadComboBox ID="radProcessLn" runat="server" AllowCustomText="true" EnableScreenBoundaryDetection="False" EmptyMessage="Insert/select" />
<asp:RequiredFieldValidator ID="rfvProcessLn" ControlToValidate="radProcessLn" ErrorMessage="Please enter Process Ln / Operation" InitialValue="" ValidationGroup="Submit" CssClass="mandatory" runat="server"Display="Dynamic" />| var rows = document.getElementById('<%= grdTeeDetails.Clientid%>').rows; |
| for(i=1;i <rows.length;i++) |
| { |
| if(document.getElementById('ctl00_cphMainContent_grdTeeDetails_ctl02_txtLPar' + i) != null) |
| { |
| document.getElementById('ctl00_cphMainContent_grdTeeDetails_ctl02_txtLPar' + i).style.visibility='visible'; |
| document.getElementById('ctl00_cphMainContent_grdTeeDetails_ctl02_txtLPar' + i).style.display=''; |
| txtLPar=$find(document.getElementById('ctl00_cphMainContent_grdTeeDetails_ctl02_txtLPar' + i).id); |
| txtLPar.set_visible(true); |
| } |
| } |

<ExpandCollapseColumn Visible="false"></ExpandCollapseColumn> It doesn't matter if I choose True or False, the column is still there.
I change the button type or any of the options I get in intellisense but the grid renders the same.
I want to add a header to the column for my users since they don't seem to comprehend what the arrow is for
without instructions. I'm posting what I think is the relevant markup in case I did something wrong here.
Thanks for any help.
<telerik:RadGridID="RadGrid1"EnableAJAX="True"DataSourceID="sdsRefrigerantCylinders"runat="server"Width="100%"AutoGenerateColumns="False"PageSize="20"AllowSorting="True"Skin="Outlook"AllowPaging="True"AllowAutomaticUpdates="True"AllowAutomaticInserts="True"ShowStatusBar="True"GridLines="None"><PagerStyleMode="NextPrevAndNumeric"></PagerStyle><MasterTableViewDataSourceID="sdsRefrigerantCylinders"CommandItemDisplay="top"CommandItemSettings-AddNewRecordText="Insert New Cylinder"DataKeyNames="CylinderID,SiteID"AllowMultiColumnSorting="true"AllowAutomaticUpdates="true"AllowAutomaticInserts="true"Name="Cylinders"><ExpandCollapseColumnVisible="True"ButtonType="PushButton"ItemStyle-BackColor="red"></ExpandCollapseColumn><Columns><telerik:GridEditCommandColumnHeaderStyle-Width="50px"EditText="Edit Cylinder"><HeaderStyleWidth="50px"></HeaderStyle></telerik:GridEditCommandColumn><telerik:GridTemplateColumnUniqueName="CylinderID"HeaderText="Cylinder ID"SortExpression="CylinderID"DataField="CylinderID"ItemStyle-Width="50px"HeaderStyle-Width="50px"><ItemTemplate><asp:LabelID="lblCylinderID"runat="server"Text='<%# Eval("CylinderId") %>'></asp:Label></ItemTemplate><HeaderStyleWidth="50px"></HeaderStyle><ItemStyleWidth="50px"></ItemStyle></telerik:GridTemplateColumn><telerik:GridTemplateColumnUniqueName="CylinderSerNo"HeaderText="Serial No"SortExpression="CylinderSerialNO"HeaderStyle-Wrap="true"ItemStyle-Width="75px"HeaderStyle-Width="70px"><ItemTemplate><asp:LabelID="lblSerNo"runat="server"Text='<%# Eval("CylinderSerialNO") %>'></asp:Label></ItemTemplate><EditItemTemplate><telerik:RadTextBoxID="rtbSerNo"runat="server"Text='<%# Bind("CylinderSerialNo") %>'></telerik:RadTextBox></EditItemTemplate><HeaderStyleWidth="75px"></HeaderStyle><ItemStyleWidth="75px"></ItemStyle></telerik:GridTemplateColumn>