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

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Naga asked on 05 Jul 2012, 01:17 PM

Hello:
We have been encountered with the below error

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

while we were trying to work with KendoGrids.This feature is quite inconsistent and unable perform required operation on the grids.This is hampering our automation as most of them are grids.Below is the code that we are using

System.Threading.Thread.Sleep(1000);

KendoGrid grid=ActiveBrowser.Find.ById<KendoGrid>("assessmentWorklistViewInner");

foreach(KendoGridDataItem row in grid.DataItems)

{

for (int i=1;i<=row.Cells.Count-1;i++)

{

var tempval=row.Cells[i].TextContent;

Log.WriteLine(tempval);

if (tempval=="Annual")

{

row.Cells[4].MouseClick();

break;

//cell.MouseClick(true);

}

5 Answers, 1 is accepted

Accepted

answered on 06 Jul 2012, 06:12 PM

Hello Naga,

Which line is returning null? I adapted your code to execute against this Telerik Kendo demo site and it worked correctly.

You may try inserting an additional line to assert the grid is correctly found and is not null:

KendoGrid grid=ActiveBrowser.Find.ById<KendoGrid>("assessmentWorklistViewInner");

Assert.IsNotNull(grid);

You may also need to wait for the grid to exist before acting upon it. This is easiest done through a standard Wait For Exists step, but also can be done in code.

All the best,
Anthony
the Telerik team

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answered on 16 Oct 2014, 05:35 AM

Hi Anthony,

I am facing a similar issue while finding an HtmlAnchor object and then clicking on it through code.

The anchor tag is inside a frame which is opened in an aspx page.

I have tried different solutions as below:

1.
HtmlAnchor crlink = new HtmlAnchor();
crlink = Manager.ActiveBrowser.Find.ByExpression<HtmlAnchor>("InnerText=~Complete Task","tagname=a","id=CloseLink");

2.
HtmlAnchor crLink = table.Find.ByAttributes<HtmlAnchor("href=http://www.google.com");
crLink.Click();

3.
HtmlAnchor CRLink = ActiveBrowser.Find.ById<HtmlAnchor>("CloseLink");
CRLink.Click(true);

4.
Element e1 = ActiveBrowser.Find.ById("CloseLink");
HtmlAnchor CRLink = new HtmlAnchor(e1);
CRLink.InvokeEvent(ScriptEventType.OnClick);
CRLink.MouseClick();

But each time I am getting the same exception as Naga.
Please help.

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

5 Answers, 1 is accepted