Web Services
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Web Services
asked on 08 Dec 2011, 07:18 PM
I have a grid template column as such
I am then editing the checkboxes in the code behind to dynamically set them to checked or not
What I need to do is add the oncheckchanged event. Essentially, when a user either checks a box, or unchecks a box, I need to update a database and then show a tool tip telling them it was successful. I tried doing this programmatically, and adding it in the aspx but I can't get anything to work. Can you help me out?
<telerik:GridTemplateColumn HeaderText="Don't Export" HeaderStyle-Width="40px" DataField="exportCheck" SortExpression="exportCheck" UniqueName="exportCheck"> <ItemStyle Width="40px" /> <ItemTemplate> <asp:CheckBox ID="printCheck" runat="server" AutoPostBack="false" OnCheckedChanged="printCheckChanged" /> </ItemTemplate> </telerik:GridTemplateColumn>I am then editing the checkboxes in the code behind to dynamically set them to checked or not
Protected Sub RadGrid1_ItemDataBound(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridItemEventArgs) Handles RadGrid1.ItemDataBound If TypeOf e.Item Is GridDataItem Then 'get the row item Dim item As GridDataItem = DirectCast(e.Item, GridDataItem) 'check to see if we need to check the box Dim export = DirectCast(item("export").Text, String) 'get the checkbox Dim check As CheckBox = DirectCast(item("exportCheck").Controls(1), CheckBox) 'if we need to check the box then we will get it and check it If (export = "no") Then check.Checked = True End If 'if export End If 'if e.item End Sub 'itemDataBoundWhat I need to do is add the oncheckchanged event. Essentially, when a user either checks a box, or unchecks a box, I need to update a database and then show a tool tip telling them it was successful. I tried doing this programmatically, and adding it in the aspx but I can't get anything to work. Can you help me out?
3 Answers, 1 is accepted
0
Accepted
Jayesh Goyani
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answered on 08 Dec 2011, 08:34 PM
Hello,
please check below code snippet.
Thanks,
Jayesh Goyani
please check below code snippet.
<telerik:GridTemplateColumn UniqueName="MyColumn"> <ItemTemplate> <asp:CheckBox ID="CheckBox1" runat="server" OnCheckedChanged="CheckBox1_CheckedChanged" AutoPostBack="true" /> </ItemTemplate> </telerik:GridTemplateColumn>protected void CheckBox1_CheckedChanged(object sender, EventArgs e) { CheckBox CheckBox1 = sender as CheckBox; // you can access grid row here GridDataItem item = CheckBox1.NamingContainer as GridDataItem; // perform here DB operation TableCell cell = item["MyColumn"]; cell.ToolTip = DateTime.Now + "_Updated"; }Thanks,
Jayesh Goyani
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Natalya
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answered on 05 Sep 2018, 08:57 PM
Hello Jayesh,
I used your code for my checkbox event. It works great. Could you also suggest how to manipulate with values from drop-down list on selected index changed event? I tried to use the same code you have suggested for checkbox, but I got an error: "Unable to cast object of type 'PanelNamingContainer' to type 'Telerik.Web.UI.GridDataItem ".
This is my code:
protected void ddlAssign_SelectedIndexChanged(object sender, DropDownListEventArgs e)
{
RadDropDownList ddlAssign = (RadDropDownList)sender;
GridDataItem item = (GridDataItem)ddlAssign.NamingContainer;
HiddenField hqc_DateAsigned = (HiddenField)item.FindControl("hqc_DateAsigned");
hqc_DateAsigned.Value = DateTime.Now.ToShortDateString();
}
0
Hi Natalya,
The error you have encountered probably stems from the return type of the NamingContainer. If you have included the RadDropDownList into an EditTemplate, and you are using an Edit mode different than the "InPlace" one, the editable item is of type GridEditFormItem or GridEditFormInsertItem, rather than GridDataItem or GridDataInsertItem. You can find more information here: Accessing Controls in Edit/Insert Mode.
I suggest you to go over the articles mentioned in the Control inside EditTemplate forum thread.
If the issue persists, it would be helpful if you could share the column definition and the code snippet responsible for initializing the RadDropDownList control. Ideally, you can modify one of the samples provided in the forum post from the above and send it back to us.
Kind regards,
Tsvetomir
Progress Telerik
The error you have encountered probably stems from the return type of the NamingContainer. If you have included the RadDropDownList into an EditTemplate, and you are using an Edit mode different than the "InPlace" one, the editable item is of type GridEditFormItem or GridEditFormInsertItem, rather than GridDataItem or GridDataInsertItem. You can find more information here: Accessing Controls in Edit/Insert Mode.
I suggest you to go over the articles mentioned in the Control inside EditTemplate forum thread.
If the issue persists, it would be helpful if you could share the column definition and the code snippet responsible for initializing the RadDropDownList control. Ideally, you can modify one of the samples provided in the forum post from the above and send it back to us.
Kind regards,
Tsvetomir
Progress Telerik
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