Filtering not working with custom template column

[Anup Kagalkar]

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 

[Pavlina]

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
the Telerik team

[Anup Kagalkar]

Error message is not coming but filtering is not happening

[Pavlina]

Hello Anup,

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

All the best,
Pavlina
the Telerik team

[Huy]

It works, Thanks so much.

[Won]

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