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Programmatically set filters

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GridView
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Sieg
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Sieg asked on 01 Apr 2010, 02:33 PM
I tried to set filters for the GridView but it crashes. The error is the following one :

Expression of type 'System.Object' cannot be used for parameter of type 'System.String' of method 'Boolean Contains(System.String)'




I'm not sure why, is the code wrong or something. See below, I tried adding a filter descriptor, both ways but doesn't work.

FilterDescriptor ofilter = new FilterDescriptor(); 
ofilter.Member = radGridView1.Columns["Type"].UniqueName; 
ofilter.Operator = FilterOperator.IsContainedIn; 
ofilter.Value = sMask.ToString(); 
radGridView1.FilterDescriptors.Add(ofilter); 
radGridView1.FilterDescriptors.Add(new FilterDescriptor("Type", FilterOperator.IsContainedIn, sMask)); 

I tried the same way as setting a sort in the rows and this one works well.

SortDescriptor descriptor = new SortDescriptor(); 
descriptor.Member = "Type"
descriptor.SortDirection = ListSortDirection.Ascending; 
radGridView1.SortDescriptors.Add(descriptor); 

Work around or sample code would be appreciated.
Thanks,
Siegfrid

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Rossen Hristov
Telerik team
answered on 05 Apr 2010, 09:45 AM
Hello Siegfrid Ducharme,

What is the type of the column that you are trying to filter with "Contains"? It must be a string otherwise Contains cannot possibly work. Is it a string? Can you try specifying the column type to be a string and see how it will go.

In case you are still experiencing problems, could you please send us your sample project. We need something to debug in order to see what is going on. You can open a separate support ticket and attach the sample project. Thanks in advance.

Greetings,
Ross
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Sieg
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answered on 05 Apr 2010, 04:06 PM
Yes, the column I want to filter contains a string. It's linked to a dataTable or a dataSet. The values are displayed right if I skip the code for the filter. Tomorow, I will send a sample of my code.

Thanks,
Siegfrid
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Rossen Hristov
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Sieg
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