Rank 1
Hello,
I have a Filter Row in my GridView's header. The normal behaviour of filter is to hide the unmatching rows.
But my requirement is to highlight the matching rows and unmatched rows will still be shown. I am using the following function to do that. I am trying to set the IsSelected Property of the matching records to true, which i hoped will highlight the row. But it is not doing that. Please help.
| public void ApplySelect(object sender) |
| { |
| try |
| { |
| var senderElement = sender as FrameworkElement; |
| FilterRowDescriptor newDescriptor = new FilterRowDescriptor(); |
| newDescriptor.LogicalOperator = FilterCompositionLogicalOperator.And; |
| int idx=0; |
| foreach (MainPage.BuyHeadView bhRow in this.grid.Items) |
| { |
| TextBox txt = senderElement as TextBox; |
| if (bhRow.CampaignName.StartsWith(txt.Text.Trim())) |
| { |
| this.grid.Records[idx].IsSelected = true; |
| } |
| idx++; |
| } |
| //headerRow.ParentGrid.FilterDescriptors.Remove(headerRow.ParentGrid.FilterDescriptors.Where(fd => fd is FilterRowDescriptor).FirstOrDefault()); |
| //headerRow.ParentGrid.FilterDescriptors.Add(newDescriptor); |
| } |
| catch |
| { |
| } |
| } |
6 Answers, 1 is accepted
Can you post more info about your grid version?
Sincerely yours,
Vlad
the Telerik team
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Rank 1
The Version i am using is 2009.2.1005.35.
I got this version through one of the example downloads.
Thanks
Vishnu.
What you can implement is to create a QueryableCollectionView that will be used for the filtering instead of the one in the grid. In the custom filter row code you will add the filter descriptor to this custom collection view filter descriptors. After that you can foreach this collection and add all the items to the selected items of the grid.
Also my advice is to upgrade your binaries to the 2009 Q3 SP1 version, because there are numerous improvements in the latest version of the RadGridView for WPF.
Kind regards,
Stefan Dobrev
the Telerik team
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Rank 1
The Solution you gave worked. Thank you.
I am now using the DLLs of Q3 release.
But now, i am getting another problem. The RadGridview i was working on has two columns. I wanted to have the filter textboxes in all the column's headers. But it always gives me the filter textbox only on the first column. As i debugged, i found that the problem is with the Cell Count. The Count of cells of the Header Row is always reuturned as 1. In the following code snippet
var cells = row.ChildrenOfType<GridViewHeaderCell>(); returns only one header cell. whereas i have 2 cells. Please suggest the solution as soon as possible.
| private void InitializeFilters(GridViewHeaderRow row) |
| { |
| row.ChildrenOfType<FrameworkElement>().Where(fe => fe.Height == 26).ToList().ForEach(fe => fe.Height = double.NaN); |
| row.ChildrenOfType<GridViewHeaderCell>().ToList().ForEach(fe => fe.Height = 55); |
| // Get all header cells. |
| var cells = row.ChildrenOfType<GridViewHeaderCell>(); |
| //var cells = row.Cells; |
| foreach (GridViewHeaderCell cell in cells) |
| { |
| AlignmentContentPresenter content = cell.ChildrenOfType<AlignmentContentPresenter>().FirstOrDefault(); |
| if (cell.ChildrenOfType<TextBox>().Count <= 0) |
| this.AddFilterRowElements(content, cell); |
| } |
| }
private void AddFilterRowElements(AlignmentContentPresenter elementsHost, GridViewHeaderCell cell)
{
if (elementsHost == null || cell == null)
return;
var column = cell.Column as GridViewDataColumn;
if (column == null)
return;
// Hide default filter icon.
cell.ChildrenOfType< FilteringDropDown>().ToList().ForEach(fd => fd.Visibility = Visibility.Collapsed);
// Insert two row definitions
Grid parentGrid = elementsHost.ParentOfType<Grid>();
parentGrid.RowDefinitions.Add( new RowDefinition());
parentGrid.RowDefinitions.Add( new RowDefinition());
FrameworkElement element = null;
//if (column.DataType == typeof(System.String))
//{
TextBox stringBox = new TextBox();
stringBox.TextChanged += new TextChangedEventHandler(TextBox_TextChanged);
element = stringBox;
//}
Grid.SetRow(element, parentGrid.RowDefinitions.Count - 1);
parentGrid.Children.Add(element); } |
Thanks,
Vishnu
You can use the Header property of the Column to insert your filtering text box. For example you can specify a header which looks like this:
<telerik:RadGridView> <telerik:RadGridView.Columns> <telerik:GridViewDataColumn DataMemberBinding="{Binding TheNameOfTheProperty}"> <telerik:GridViewDataColumn.Header> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition /> <ColumnDefinition /> </Grid.ColumnDefinitions> <TextBlock Text="Put your header text here" /> <TextBox TextChanged="TextBox_TextChanged" /> </Grid> </telerik:GridViewDataColumn.Header> </telerik:GridViewDataColumn> </telerik:RadGridView.Columns> </telerik:RadGridView>Hope this helps,
Stefan Dobrev
the Telerik team
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Rank 1
I did as you said to do. But it still does not work. The problem is i have to handle the TextBox_TextChanged
in another class. If i code it in xaml i will have to handle it in xaml.cs, which i cant.
I have uploaded the entire code at the following support ticket (as i cant do it in the post).
Kidnly look into the code and suggest a solution as soon as possible.
http://www.telerik.com/account/support-tickets/view-ticket.aspx?threadid=270403
Thanks,
Vishnu