How to check 'check-box' within a Grid

[Svetlana]

Hello

I have RadGrid control with check-box within a cell:
<td align="center" style="width: 30px;">
    <span title="Test Title"
        id="ctl00_MC_gridSchedule_ctl00_ctl08_HasAccessExtended">
        <input type="image" style="height: 13px; width: 13px; border-width: 0px;" src="/std/WebResource.axd
            checked="Blank" id="ctl00_MC_gridSchedule_ctl00_ctl08_HasAccessExtended_checkBox"
            name="ctl00$MC$gridSchedule$ctl00$ctl08$HasAccessExtended$checkBox">
            <input type="hidden"
                value="Blank" id="ctl00_MC_gridSchedule_ctl00_ctl08_HasAccessExtended_hidden"
                name="ctl00$MC$gridSchedule$ctl00$ctl08$HasAccessExtended$hidden">
   </span>
</td>
I've located the target cell in  the grid : GridDataCell targetCell
How can I check the check-box with id="ctl00_MC_gridSchedule_ctl00_ctl08_HasAccessExtended_checkBox"?

Regards,
Svetlana

[Cody]

Hello Svetlana,

Using two lines of code you can do this:

HtmlInputCheckBox cbox = targetCell.Find.ById<HtmlInputCheckBox>("ctl00_MC_gridSchedule_ctl00_ctl08_HasAccessExtended_checkBox");
cbox.Check(true, true);

The first parameter of the .Check call indicates whether to check or uncheck the checkbox. true = check the checbox. false = uncheck the checkbox.

The second parameter indicates whether or not to invoke the OnClickChanged event handler for the checkbox. This is useful for AJAX postbacks when a click on the checkbox is supposed to trigger a postback event. If you don't need to trigger a postback, you can set the second parameter to false which will make the test a little more efficient (it won't have to activate some JavaScript in the background).

You could also combine the two lines of code into one like this:

targetCell.Find.ById<HtmlInputCheckBox>("ctl00_MC_gridSchedule_ctl00_ctl08_HasAccessExtended_checkBox").Check(true, true);

Kind regards,
Cody
the Telerik team

[Svetlana]

Hello Cody,

Thank you for the answer, but the solution does not work :(
Error occurs on

cbox.Check(true, true);

InnerException:
System.NullReferenceException: Object reference not set to an instance of an object.

Seems that the tool does not recognize that the control is check-box. Because

var cbox = targetCell.Find.ByAttributes("name=ctl00$MC$gridSchedule$ctl00$ctl08$HasAccessExtended$checkBox");
cbox.Focus();

wotks fine, but I don't now how to perform "check" action...

Regards,
Svetlana

[Cody]

Hello Svetlana,

It appears you're using VB.NET (my sample was C# code). Instead of using a var, could you try casting it to a HtmlInputCheckBox type with code like this:

Dim cbox As HtmlInputCheckBox = targetCell.Find.ByAttributes(Of HtmlInputCheckBox)("name=ctl00$MC$gridSchedule$ctl00$ctl08$HasAccessExtended$checkBox");

The problem I suspect you're running into is that the plain targetCell.Find.ByAttributes returns a simple "Element" object instead of a HtmlInputCheckBox object. As a result your "var cbox" is a plain Element which can't handle the .Check(true,true) method call.

Regards,
Cody
the Telerik team