Questions on UI for WinForms Forum

1 answer

218 views

How to show GridviewCheckBoxColumn- CheckBox column without a box around it (just the tick or empty) ?

I want to show a CheckBox column without a box around it (just the tick or empty). But i am not sure how to style this. My GridviewCheckBoxColumn is readonly in this case so i want to just show a Tick mark when the file is true otherwise leave blank. Here is the code where i add the column to radgridview:
Please help
Thanks

GridViewCheckBoxColumn colIsActive = new GridViewCheckBoxColumn("IsActive");

colIsActive .Width = 50;

colIsActive .HeaderText = "Active";

colIsActive .ReadOnly = true;

colIsActive .WrapText = true;

//colIsActive .style???= no box around ???

_radGV.MasterTemplate.Columns.Add(colIsActive );

GridView

answered on 28 Sep 2011

4 answers

755 views

Touchscreen scrolling

Hi,

I have a listbox being used on a touchscreen based PC. I would like to be able to scroll my list up and down by dragging on the list itself and then pressing an item within the list to select it.

Failing that is there any way to increase the width of the scrollbars so that dragging the vertical scrollbar is easier?

Regards,

Jon

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 28 Sep 2011

1 answer

208 views

First column - getting rid of

Hi

How do I get rid or hide the first column in a datagrid. It is the column that shows a right arrow when you select a row. Attached is a screen grab of the column I mean

Cheers

GridView

answered on 28 Sep 2011

1 answer

371 views

filter on multiple columns

I know that there are many forum posts regarding filtering but I am having the hardest time trying to figure out how to accomplish this filter scenario:

I have 4 columns, Rdel, RAdd, RMod, RErr.
right now I have those columns set as Integer type in my datatable that I bind to the radgridview. I handle changhing the values as need be but I need to be able to use filters so that I can not rows. The way I have been trying to set the filters up I have used a custom context menu that uses a check type menuitem. So when that value changes I am trying to add or remove descriptors. So I may have many or no filters applied to the grid. Right now I have something like this and it sort of works but I just wanted to kbnow if there is a better way of doing this.

  Public Const conMODIFIED As String = "RMod"

    Public Const conADDED As String = "RAdd"

    Public Const conDELETED As String = "RDel"

    Public Const conERRORROW As String = "RErr"

    Public Const conCHANGESLINK As String = "RCHGS"

    Public Const conROWID As String = "iRowID"

    Public Const conLSGRDTYPE As String = "lsGrdDataType"

    Public Const conCHFLAG As Integer = 1 '"x"

    Public Const conUCHFLAG As Integer = 0 '""



Public Sub ViewRowStates(Optional ByVal UnchangedRows As Boolean = True, Optional ByVal ChangedRows As Boolean = True, _

Optional ByVal AddedRows As Boolean = True, Optional ByVal DeletedRows As Boolean = True, _

Optional ByVal ErrorRows As Boolean = False)

Me.FilterDescriptors.Remove(conADDED)

Me.FilterDescriptors.Remove(conMODIFIED)

Me.FilterDescriptors.Remove(conDELETED)

Me.FilterDescriptors.Remove(conERRORROW)

Dim cFilter As New Telerik.WinControls.Data.CompositeFilterDescriptor

If Not UnchangedRows Then

Dim compFilter As New Telerik.WinControls.Data.FilterDescriptor

compFilter.PropertyName = conMODIFIED

compFilter.Operator = Telerik.WinControls.Data.FilterOperator.IsEqualTo

compFilter.Value = conCHFLAG

compFilter.IsFilterEditor = True

cFilter.FilterDescriptors.Add(compFilter)

End If

If Not ChangedRows Then

Dim compFilter As New Telerik.WinControls.Data.FilterDescriptor

compFilter.PropertyName = conMODIFIED

compFilter.Operator = Telerik.WinControls.Data.FilterOperator.IsNotEqualTo

compFilter.Value = conCHFLAG

compFilter.IsFilterEditor = True

cFilter.FilterDescriptors.Add(compFilter)

End If

If Not AddedRows Then

Dim compFilter As New Telerik.WinControls.Data.FilterDescriptor

compFilter.PropertyName = conADDED

compFilter.Operator = Telerik.WinControls.Data.FilterOperator.IsNotEqualTo

compFilter.Value = conCHFLAG

compFilter.IsFilterEditor = True

cFilter.FilterDescriptors.Add(compFilter)

End If

If Not DeletedRows Then

Dim compFilter As New Telerik.WinControls.Data.FilterDescriptor

compFilter.PropertyName = conDELETED

compFilter.Operator = Telerik.WinControls.Data.FilterOperator.IsNotEqualTo

compFilter.Value = conCHFLAG

compFilter.IsFilterEditor = True

cFilter.FilterDescriptors.Add(compFilter)

End If

If Not ErrorRows Then

Dim compFilter As New Telerik.WinControls.Data.FilterDescriptor

compFilter.PropertyName = conERRORROW

compFilter.Operator = Telerik.WinControls.Data.FilterOperator.IsNotEqualTo

compFilter.Value = conCHFLAG

compFilter.IsFilterEditor = True

cFilter.FilterDescriptors.Add(compFilter)

End If

Me.FilterDescriptors.Add(cFilter)

End Sub

If there is a better way to handle this scenario I would appreciate any suggestions. The main thing is that I will add and remove filters on a single column and not want to lose the existing ones. I would also need to be able to only see the rows that have a 1 in any of those columns. A row could have a 1 in conAdded, conModified, and conDeleted. That is so I can undo a single operation, such as a delete and still know that row was added.

Thanks once again.

Nick

GridView

answered on 28 Sep 2011

4 answers

381 views

How to bind nested generic list to radGridView?

Hello

I' going to Load Data from a nested generic list and Bind it to a radGridView. But I could not do that

this is my list:

List<List<string>> Mylist = new List<List<string>>();

and I add items into the list like below:

Mylist.Add(new List<string> { str1, str2, str3 });

at the end I set the gridview dataSource like this:

DGV1.DataSource = Mylist;

But it does not show the data from the list. the grid has 2 columns: Capacity, Count

Does anyone knows How I can Bind Mylist to the grid?

thanks

GridView

answered on 28 Sep 2011

3 answers

139 views

GridView filtering exception

Hi all,

I have a grid view with multiple columns, on which I want to apply filtering. When I use multiple filters, I get an exception of type

ArgumentOutOfRangeException
Index must be within the bounds of the List.
Parameter name: index

I can't find the cause of this, so does anybody have an idea of what's going wrong here? Grouping is also applied to the gridview (but I also tested without grouping with same exception as result).

The complete callstack is this:
at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)
   at System.Collections.Generic.List`1.Insert(Int32 index, T item)
   at System.Collections.ObjectModel.Collection`1.InsertItem(Int32 index, T item)
   at Telerik.Collections.Generic.NotifyCollection`1.InsertItem(Int32 index, T item)
   at Telerik.WinControls.UI.GridViewFilterDescriptorCollection.InsertItem(Int32 index, FilterDescriptor item)
   at System.Collections.ObjectModel.Collection`1.Add(T item)
   at Telerik.WinControls.UI.GridViewDataColumn.SetFilterDescriptor(FilterDescriptor value)
   at Telerik.WinControls.UI.RadListFilterMenuProvider.SetFilterDesriptor(GridViewDataColumn dataColumn, FilterDescriptor descriptor)
   at Telerik.WinControls.UI.RadListFilterMenuProvider.SetFilterDescriptor(FilterDescriptor descriptor)
   at Telerik.WinControls.UI.RadListFilterMenuProvider.ButtonOK_Click(Object sender, EventArgs e)
   at System.EventHandler.Invoke(Object sender, EventArgs e)
   at Telerik.WinControls.RadItem.OnClick(EventArgs e)
   at Telerik.WinControls.UI.RadButtonItem.OnClick(EventArgs e)
   at Telerik.WinControls.RadItem.DoClick(EventArgs e)
   at Telerik.WinControls.RadItem.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)
   at Telerik.WinControls.RadElement.RaiseRoutedEvent(RadElement sender, RoutedEventArgs args)
   at Telerik.WinControls.RadItem.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)
   at Telerik.WinControls.RadElement.RaiseRoutedEvent(RadElement sender, RoutedEventArgs args)
   at Telerik.WinControls.RadElement.DoMouseUp(MouseEventArgs e)
   at Telerik.WinControls.ComponentInputBehavior.OnMouseUp(MouseEventArgs e)
   at Telerik.WinControls.RadControl.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 Telerik.WinControls.UI.RadPopupControlBase.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.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.Run(Form mainForm)
   at WinWorkFlow.Program.Main(String[] args) in C:\Data\TeamProjects\devc#2009\MuseumWorkflow.root\MuseumWorkflow\WinWorkFlow\Program.cs:line 19

Thanks,
Christ

GridView

answered on 28 Sep 2011

3 answers

97 views

Back date and Future date is not working in radMaskedEditTextbox

Hi Team,

When doing some research on radmaskedittextbox(DateFormat) i observed the following things.

1.By default maskedittextbox is allowing user to select only date between 1st of current month and
current date.

2.it is not allowing back date and also future date.

3.I am not able to clear the default date of radmaskedittextbox(DateFormat) in runtime.

but in my application i want to allow back date and also future date.please tell me how to achieve this.

My Code snippet:
private void rcStartDate_SelectionChanged(object sender, EventArgs e)
        {
            rmebStartDate.Clear();
            rmebStartDate.Text = "";
            rmebEndDate.Value = "";

            rmebStartDate.Text = rcStartDate.SelectedDate.ToShortDateString().ToString();
            rcStartDate.Visible = false;
        }

Thanks
Ulaga

MaskedEditBox

answered on 28 Sep 2011

3 answers

584 views

Cannot find Property to change CheckMark Color for a CheckBox

Dear Telerik team,
I am designing a style for CheckBox control and the problem i face is "I cannot find property to change CheckMark color and backColor of the box for check mark. The property i guess would have worked is "RadCheckBoxElement.ToggleState=Ok.Pressed. But this property produces arrows etc ( for whatever shape i choose from available options)

none of the property changes the dark brown color of check and the box.

Thanks

Themes and Visual Style Builder

answered on 28 Sep 2011

2 answers

304 views

HTMLFormatProvider and font-style problem

Hi all,
I've a problem with HTMLFormatProvider and font-style.
I'm using a radRichTextBox with richRibbonBar (but the problem is also present with a button that execute radRichTextBox1.toggleItalic() ). For example, I have write the string "foofoofoo" in italic inside radRichTextBox and then, using HTMLFormatProvider, I've got the text associated to the document.

This is the ExportToHTML function

public string ExportToHTML(RadDocument document)
{
HtmlFormatProvider provider = new HtmlFormatProvider();
return provider.Export(document);
}

This is the string returned:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>Untitled</title><style type="text/css">
.p_4451D050 { margin: 0px 0px 12px 0px;text-align: left;text-indent: 0pt;padding: 0px 0px 0px 0px; }
.s_C54C634B { font-family: 'Calibri';font-style: System.Collections.Specialized.StringCollection;font-size: 16px;color: #000000; }
</style></head><body><p class="p_4451D050"><span class="s_C54C634B">foofoofoo</span></p></body></html>

There is a problem in font-style settings of css class, because it doesn't write "italic" but "System.Collections....".
So, when I send a html-email in this format I lost this font setting..

I've tried with XamlFormatProvider and italic (as fontweight) is correct.

Thanks a lot for your help

RichTextBox (obsolete as of Q3 2014 SP1)

answered on 27 Sep 2011

2 answers

264 views

ErrorProvider Icon in RADGridViewCell

After searching the forums for some time (days, well 2 days) I finally have a solution on displaying an Error Icon in a cell of a RADGridView i.e. like in SQL Management Studio when a certain criteria is met.
Scenario 1: Validate all cells in a row simultaneously
Scenario 2: Validate an individual cell

So here goes:
Solution 1: Validate all cells in a row simultaneously

Private Sub rgvSrcExtractFiles_RowValidating(ByVal sender As System.Object, ByVal e As Telerik.WinControls.UI.RowValidatingEventArgs) Handles rgvSrcExtractFiles.RowValidating

If TypeOf e.Row Is GridViewDataRowInfo Then

For Each cell As GridViewCellInfo In e.Row.Cells

Select Case cell.ColumnInfo.Name

Case "FileDirectory"

If Not FileAcc.DirectoryExists(cell.Value) Then

cell.ErrorText = "Directory not found!"

ElseIf FileAcc.CountFilePrefixWithExt(cell.Value, e.Row.Cells("FilePrefix").Value, e.Row.Cells("FileExtension").Value) = 0 Then

cell.ErrorText = "No valid files found in directory!"

Else

cell.ErrorText = String.Empty

End If

Case "FilePrefix"

If FileAcc.CountFilePrefix(e.Row.Cells("FileDirectory").Value, cell.Value) = 0 Then

cell.ErrorText = "Files not found!"

Else

cell.ErrorText = String.Empty

End If

Case "FileExtension"

If FileAcc.CountFileExt(e.Row.Cells("FileDirectory").Value, cell.Value) = 0 Then

cell.ErrorText = "Files not found!"

Else

cell.ErrorText = String.Empty

End If

End Select

Next

End If

End Sub

Solution 2: Validate an individual cell

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

Dim column As GridViewDataColumn = TryCast(e.Column, GridViewDataColumn)

If TypeOf e.Row Is GridViewDataRowInfo AndAlso column IsNot Nothing Then

Select Case column.Name

Case "FileDirectory"

If Not FileAcc.DirectoryExists(e.Value) Then

DirectCast(e.Row.Cells(e.ColumnIndex), GridViewCellInfo).ErrorText = "Directory not found!"

ElseIf FileAcc.CountFilePrefixWithExt(e.Value, e.Row.Cells("FilePrefix").Value, e.Row.Cells("FileExtension").Value) = 0 Then

DirectCast(e.Row.Cells(e.ColumnIndex), GridViewCellInfo).ErrorText = "Files not found!"

Else

DirectCast(e.Row.Cells(e.ColumnIndex), GridViewCellInfo).ErrorText = String.Empty

End If

Case "FilePrefix"

If FileAcc.CountFilePrefix(e.Row.Cells("FileDirectory").Value, e.Value) = 0 Then

DirectCast(e.Row.Cells(e.ColumnIndex), GridViewCellInfo).ErrorText = "Files not found!"

Else

DirectCast(e.Row.Cells(e.ColumnIndex), GridViewCellInfo).ErrorText = String.Empty

End If

Case "FileExtension"

If FileAcc.CountFileExt(e.Row.Cells("FileDirectory").Value, e.Value) = 0 Then

DirectCast(e.Row.Cells(e.ColumnIndex), GridViewCellInfo).ErrorText = "Files not found!"

Else

DirectCast(e.Row.Cells(e.ColumnIndex), GridViewCellInfo).ErrorText = String.Empty

End If

End Select

End If

End Sub

AND TADA : **** THE MAGIC *****

Private Sub rgvSrcExtractFiles_CellFormatting(ByVal sender As System.Object, ByVal e As Telerik.WinControls.UI.CellFormattingEventArgs) Handles rgvSrcExtractFiles.CellFormatting

Dim cell As GridDataCellElement = TryCast(e.CellElement, GridDataCellElement)

If cell IsNot Nothing Then

If cell.ContainsErrors Then

'Uncomment to draw a red border around cell as well

'cell.DrawBorder = True

'cell.BorderBoxStyle = BorderBoxStyle.SingleBorder

'cell.BorderWidth = 2

'cell.BorderColor = Color.Red

'cell.ImageAlignment = ContentAlignment.MiddleRight

Dim prov As New ErrorProvider

Dim conv As New ImageConverter

cell.Image = conv.ConvertFrom(prov.Icon)

cell.TextImageRelation = TextImageRelation.TextBeforeImage

cell.ImageAlignment = ContentAlignment.MiddleRight

cell.ImageLayout = ImageLayout.None

Else

'Resets the borders to the original value

'cell.ResetValue(LightVisualElement.DrawBorderProperty, ValueResetFlags.Local)

'cell.ResetValue(LightVisualElement.BorderBoxStyleProperty, ValueResetFlags.Local)

'cell.ResetValue(LightVisualElement.BorderWidthProperty, ValueResetFlags.Local)

'cell.ResetValue(LightVisualElement.BorderColorProperty, ValueResetFlags.Local)

cell.Image = Nothing

End If

End Sub

That's it folks. You can use EITHER Solution 1 or 2, but you have to include the magic irrespective of which one you choose.
Hope this saves you some hours.

Sharing is Caring
The_O

GridView

answered on 27 Sep 2011