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Filtering not working with custom template column

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Anup Kagalkar
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Anup Kagalkar asked on 19 Aug 2010, 08:09 AM
Hi

I have created custom template column for filtering . Given below is code of MyCustomFilteringTemplateColumn.cs. I m using Entity datasource 


 //RadGrid will cal this method when the value should be set to the filtering input control(s)
        protected override void SetCurrentFilterValueToControl(TableCell cell)
        {
            base.SetCurrentFilterValueToControl(cell);
            RadComboBox combo = (RadComboBox)cell.Controls[0];
            if ((this.CurrentFilterValue != string.Empty))
            {
                combo.Text = this.CurrentFilterValue;
            }
        }

     

        //RadGrid will cal this method when the filtering value should be extracted from the filtering input control(s)
        protected override string GetCurrentFilterValueFromControl(TableCell cell)
        {
            RadComboBox combo = (RadComboBox)cell.Controls[0];
         
            this.CurrentFilterFunction = (combo.Text.Trim() != "") ? GridKnownFunction.EqualTo : GridKnownFunction.NoFilter;
            return combo.Text;

           
        }

        private void list_ItemsRequested(object o, RadComboBoxItemsRequestedEventArgs e)
        {
            
             
                    Collection<Entities.ProjectUsersAndGroups> collDataSource = (Collection<Entities.ProjectUsersAndGroups>)FilterDataSource;
                    ((RadComboBox)o).DataTextField = this.DataField;
                    ((RadComboBox)o).DataValueField = this.DataField;
                    ((RadComboBox)o).DataSource = collDataSource;
                    ((RadComboBox)o).DataBind();
                    break;

           

        }

        private void list_SelectedIndexChanged(object o, RadComboBoxSelectedIndexChangedEventArgs e)
        {
            GridFilteringItem filterItem = (GridFilteringItem)((RadComboBox)o).NamingContainer;
            if ((this.UniqueName == "Index"))
            {
                //this is filtering for integer column type 
                filterItem.FireCommandEvent("Filter", new Pair("EqualTo", this.DataField));
            }
            //filtering for string column type
            if (this.UniqueName == "ProjectCategoryName")
                this.UniqueName = "ProjectCategoryDetails.ProjectCategoryName";

            filterItem.FireCommandEvent("Filter", new Pair("Contains", this.DataField));


        }



While filtering I am getting error  "Expression expected " on this line   filterItem.FireCommandEvent("Filter", new Pair("Contains", this.DataField));".


Please help me out 

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Pavlina
Telerik team
answered on 19 Aug 2010, 02:16 PM
Hello Anup,

Try to set RadGrid EnableLinqExpressions property to false and let me know if it helps to eliminate the error message.

Sincerely yours,
Pavlina
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Anup Kagalkar
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answered on 19 Aug 2010, 04:10 PM
Error message is not coming but filtering is not happening
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Pavlina
Telerik team
answered on 24 Aug 2010, 02:39 PM
Hello Anup,

Could you please confirm that you have not override DataField property in your custom column?

All the best,
Pavlina
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Huy
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answered on 26 Apr 2012, 07:37 AM
It works, Thanks so much.
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Won
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answered on 01 Nov 2012, 04:38 AM
This works even as of Oct, 2012. I'm using .net 4.

The document for this filtering should be updated accordingly.

http://www.telerik.com/help/aspnet-ajax/grid-google-like-filtering.html
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Pavlina
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Anup Kagalkar
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