Questions on UI for WinForms Forum

1 answer

179 views

[Solved] BestFitColumns makes some columns too narrow

Hi Telerik Team,

I've got a radgridview on a form. One of the columns have some long info. When I call bestfitcolumns after binding to grid some columns are to narrow. I can't even read what's in that column. Can you please take a look at the screenshot.
Thank you.
Erkut

GridView

answered on 19 Oct 2010

13 answers

291 views

[Solved] How to Filter prefixes

Hi
I'm using version 2010 Q2. In this version, we have filter prefixes in the filter row. But I like to remove them (Just like previous version).
How can I do that?

GridView

answered on 19 Oct 2010

5 answers

165 views

Exception during custom sorting 2010 Q2 SP2.

Hi

2010 Q2 SP2.

I have random exception when I want sort in grid.

I do something wrong or there is bug in grid?

In my scenario I do custom sorting:

private void radGridView1_CustomSorting(object sender, GridViewCustomSortingEventArgs e)

{

if (e.Column.Name == "Size")

{

SizeObject size1 = e.CellValue1 as SizeObject;

SizeObject size2 = e.CellValue2 as SizeObject;

if (size1.Size > size2.Size)

{ e.SortResult = 1; }

else if (size1.Size < size2.Size)

{ e.SortResult = -1; }

else

{ e.SortResult = 0; }

}

if (e.Column.SortOrder == RadSortOrder.Descending)

{ e.SortResult *= -1; }

}

ArgumentException - Insufficient space in the target location to copy the information.

at System.Collections.Generic.LinkedList`1.CopyTo(T[] array, Int32 index)
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at Telerik.WinControls.UI.GridViewSynchronizationService.AnalyzeQueue()
at Telerik.WinControls.UI.GridViewSynchronizationService.FlushEvents()
at Telerik.WinControls.UI.GridViewSynchronizationService.DispatchEvent(GridViewEvent gridEvent)
at Telerik.WinControls.UI.GridViewSynchronizationService.DispatchEvent(GridViewTemplate template, GridViewEvent eventData, Boolean postUI)
at Telerik.WinControls.UI.GridViewTemplate.DispatchEvent(GridViewEvent gridEvent, Boolean postUI)
at Telerik.WinControls.UI.GridViewTemplate.DispatchDataViewChangedEvent(Object sender, DataViewChangedEventArgs args)
at Telerik.WinControls.UI.GridViewTemplate.FireViewChangedEvent(Object sender, DataViewChangedEventArgs args)
at Telerik.WinControls.UI.GridViewTemplate.OnViewChanged(Object sender, DataViewChangedEventArgs e)
at Telerik.WinControls.UI.GridViewTemplate.OnViewChanged(DataViewChangedEventArgs e)
at Telerik.WinControls.UI.GridViewTemplate.CollectionView_CollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
at Telerik.WinControls.Data.RadCollectionView`1.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
at Telerik.WinControls.Data.RadDataView`1.RebuildData(Boolean notify)
at Telerik.WinControls.Data.RadDataView`1.RefreshOverride()
at Telerik.WinControls.Data.RadDataView`1.OnNotifyPropertyChanged(PropertyChangedEventArgs e)
at Telerik.WinControls.Data.RadCollectionView`1.OnNotifyPropertyChanged(String propertyName)
at Telerik.WinControls.Data.RadCollectionView`1.sortDescriptors_CollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
at Telerik.Collections.Generic.NotifyCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
at Telerik.WinControls.UI.GridViewSortDescriptorCollection.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
at Telerik.Collections.Generic.NotifyCollection`1.OnCollectionChanged(NotifyCollectionChangedAction action, Object item, Int32 index)
at Telerik.Collections.Generic.NotifyCollection`1.InsertItem(Int32 index, T item)
at Telerik.WinControls.Data.SortDescriptorCollection.InsertItem(Int32 index, SortDescriptor item)
at Telerik.WinControls.UI.GridViewSortDescriptorCollection.InsertItem(Int32 index, SortDescriptor item)
at System.Collections.ObjectModel.Collection`1.Add(T item)
at Telerik.WinControls.UI.GridViewColumn.Sort(RadSortOrder sortOrder, Boolean multiSortMode)
at Telerik.WinControls.UI.GridHeaderRowBehavior.OnMouseUp(MouseEventArgs e)
at Telerik.WinControls.UI.BaseGridBehavior.OnMouseUp(MouseEventArgs e)
at Telerik.WinControls.UI.RadGridView.OnMouseUp(MouseEventArgs e)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at Telerik.WinControls.RadControl.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Regards

GridView

answered on 19 Oct 2010

7 answers

227 views

[Solved] See all column content

I have a RadGridView with 3 columns.
One of the columns it's the full path of one file.
My problem is, when the file has a big full path, can't see it all because when i resize the column, it has a limit, the Control size.
Is there a way to add a horizontal scroll bar and allow me to resize one column with no limitation?

In attachment is one print of my problem.

Bruno Almeida

GridView

answered on 19 Oct 2010

2 answers

233 views

[Solved] Retrieve value of a combobox column

I am writing my own resize code based on discussions in some other threads. I am using the code from one of the examples that looks through each row and gets the column value and then uses MeasureString to determine the correct string width.

This is working well for all but my combobox columns. The value of those columns is the Id (like 35) instead of the display value (like "Acme Inc"). So the size of the column is not being set appropriately.

How do I get the actual displayed value, not the bound value for the column?

Thanks!

GridView

answered on 18 Oct 2010

2 answers

157 views

[Solved] Retrieve formatted value from a DateTime column

I am calculating the required width of my columns. The DateTime columns are all coming out too large because the .Value property of the field is the full date and time, even though the column is formatted to be the short date.

How do I get the formatted value of the column?

Thanks -

GridView

answered on 18 Oct 2010

33 answers

759 views

[Solved] Need urgent help

I am noticing a strange thing with radgridview in CurrentRowChanging event. I have a radgridview without hierarchy, having add new row position at top. The datasource is a dataset and datamember is a datatable.

In current row changing, the following code gives the values for new row just input by using the maximum index, but in another radgridview I get the values by using the index as 0. These 2 codes are as below. Both use the same version of radgridview i.e. Q1 2008 SP1. Can someone please help to explain why this is happening? I would have always expected that behind-the-scenes, a new row ( with rowstate of Added) is being added to a datatable at end of its rows collection, when the CurrentRowChanging event fires.

Thanks
Sunil

CODE 1:

if (e.CurrentRow is GridViewNewRowInfo && this.DataSource != null)

{

DataRowView dataRowView = null;

if (this.Rows.Count >= 1)

{

dataRowView = this.Rows[0].DataBoundItem as DataRowView;

}

CODE 2:

if (e.CurrentRow is GridViewNewRowInfo && attributesRadGridView.DataSource != null)

{

DataRowView dataRowView = null;

if (attributesRadGridView.Rows.Count >= 1)

{

dataRowView = attributesRadGridView.Rows[attributesRadGridView.Rows.Count - 1].DataBoundItem as DataRowView;

}

GridView

answered on 18 Oct 2010

2 answers

292 views

[Solved] Problem with CheckBox column

Hi,

Can I trigger the "CurrentCellDirtyStateChanged" event like the standard DataGridView ?

A DataSource fills my RadGridView.

I would like to display the total number of rows that are checked in a checkBox Column of my radGridView.

When I check 3 rows on the the WinForm, I only get 2 rows checked. I have to check another one or set the focus on another control to get it.

Thanks for your help!

Fabien

GridView

answered on 18 Oct 2010

9 answers

349 views

[Solved] ComboBox and Validation

Hello guys,
I have 2 problems:
1. I'm try to use gridViewComboBox, but i got this problem:
- how can I put my item(s) collection without connect throught the database??

2. I try to making a validation for each cells using the cellvalidating events, the problem is, why if I create a new row, the validation doesn't work???
here my codes:

Private Sub TabelBuku_CellValidating(ByVal sender As System.Object, ByVal e As Telerik.WinControls.UI.CellValidatingEventArgs) Handles TabelBuku.CellValidating

Dim kolom = TryCast(e.Column, GridViewDataColumn)

If ((TypeOf e.Row Is GridViewDataRowInfo) AndAlso (kolom IsNot Nothing) AndAlso (kolom.FieldName = "IdBuku")) Then

Dim baris = DirectCast(e.Row, GridViewDataRowInfo)

Dim nilai = DirectCast(e.Value, String)

If (String.IsNullOrEmpty(nilai)) Then

e.Cancel = True

lblKesalahan.BackColor = Color.LightYellow

lblKesalahan.ForeColor = Color.Red

lblKesalahan.Text = "ID Buku Harus Diisi!!"

baris.ErrorText = "ID Buku Harus Diisi!!"

Else

baris.ErrorText = String.Empty

lblKesalahan.BackColor = Color.Transparent

lblKesalahan.ForeColor = Color.LimeGreen

lblKesalahan.Text = "EDITOR DATA BUKU"

End If

End Sub

GridView

answered on 18 Oct 2010

12 answers

271 views

Needing Critical Help.

Hi all,
I've used a RadGridView in my C# app on a form. At runtime when the user leaves a cell empty Default message provided by the RadGridView appears. First, I want to replace my own message with that message and second how do I must handle such runtime errors:
1. Leaving a newly-added empty row by the user which causes to generate a runtime error.
2. Leaving a cell empty.
3. Accessing the content of a cell for some checkings like Length of the value or something else.
4. When the old value removed by the user I want to showing it again in cases which user don't provide a valid Content.

Thank you very much, Tooraj Azizi.

GridView

answered on 18 Oct 2010