Questions on UI for WinForms Forum

1 answer

280 views

Hi:
   I use userdeletingrow event to remove row .
   The BindingSource1 is the datasource of radgridview1.

   The radgridview's count is not zero but there is no row in screen.
   I want to use follow code to do somthing.
   if(radgridview1.Rows.Count==0)
   {
      //I want to do something here.
   }
   So, the if is not excute forever.

   What should I do ?

Greetings
Look forward to you
Ajing

GridView

answered on 02 Dec 2011

1 answer

152 views

Set ForeColor of AutoCompleteSuggest DropDownList

Hi,

I'm having difficulty working out how to set the colour of the items in a non-databound list, when the user types in text to bring up the autocomplete suggest mode.

I've set the colour of the ForeColor property in the items according to a business object that is set to the Value property in each item.

When the user hits the drop down arrow, the list populates with red and black items. However when the user types in 'L' and the list displays, I'm trying to get it to display the same black/red colours but it seems the items in the AutoCompleteSuggest.DropDownList.Items do not have their Value/Tag properties set from the original items.

Can you suggest a work around for this?

My experience with .Net is 7 years. My experience with Rad is about 1 month.

OS version and applied service packs

Microsoft Windows Server 2003, Standard Edition, Service Pack 2

Regional and language settings, if different from En-US

English (Australia)

.NET version (.NET2, .NET3, .NET3.5)

.NET 4.0.30319 SP1Rel, Visual Studio 2010 Version 10.0.40219.1 SP1Rel

Exact version of the Telerik product

Runtime Version v2.0.50727, Version 2011.3.11.1116

Thanks,
Clive

Imports Telerik.WinControls.UI

Public Class Form10

Inherits System.Windows.Forms.Form

'Form overrides dispose to clean up the component list.

<System.Diagnostics.DebuggerNonUserCode()> _

Protected Overrides Sub Dispose(ByVal disposing As Boolean)

Try

If disposing AndAlso components IsNot Nothing Then

components.Dispose()

End If

Finally

MyBase.Dispose(disposing)

End Try

End Sub

'Required by the Windows Form Designer

Private components As System.ComponentModel.IContainer

'NOTE: The following procedure is required by the Windows Form Designer

'It can be modified using the Windows Form Designer.

'Do not modify it using the code editor.

<System.Diagnostics.DebuggerStepThrough()> _

Private Sub InitializeComponent()

Dim RadListDataItem1 As Telerik.WinControls.UI.RadListDataItem = New Telerik.WinControls.UI.RadListDataItem()

Dim RadListDataItem2 As Telerik.WinControls.UI.RadListDataItem = New Telerik.WinControls.UI.RadListDataItem()

Dim RadListDataItem3 As Telerik.WinControls.UI.RadListDataItem = New Telerik.WinControls.UI.RadListDataItem()

Dim RadListDataItem4 As Telerik.WinControls.UI.RadListDataItem = New Telerik.WinControls.UI.RadListDataItem()

Dim RadListDataItem5 As Telerik.WinControls.UI.RadListDataItem = New Telerik.WinControls.UI.RadListDataItem()

Me.RadDropDownList1 = New Telerik.WinControls.UI.RadDropDownList()

Me.CheckBox1 = New System.Windows.Forms.CheckBox()

CType(Me.RadDropDownList1, System.ComponentModel.ISupportInitialize).BeginInit()

Me.SuspendLayout()

'

'RadDropDownList1

'

Me.RadDropDownList1.DropDownAnimationEnabled = True

RadListDataItem1.Text = "ListItem 1"

RadListDataItem1.Value = 1

RadListDataItem1.Tag = 1

RadListDataItem1.TextWrap = True

RadListDataItem2.Text = "ListItem 2"

RadListDataItem2.Value = 2

RadListDataItem2.Tag = 2

RadListDataItem2.TextWrap = True

RadListDataItem3.Text = "ListItem 3"

RadListDataItem3.Value = 3

RadListDataItem3.Tag = 3

RadListDataItem3.TextWrap = True

RadListDataItem4.Text = "ListItem 4"

RadListDataItem4.Value = 4

RadListDataItem4.Tag = 4

RadListDataItem4.TextWrap = True

RadListDataItem5.Text = "ListItem 5"

RadListDataItem5.Value = 5

RadListDataItem5.Tag = 5

RadListDataItem5.TextWrap = True

Me.RadDropDownList1.Items.Add(RadListDataItem1)

Me.RadDropDownList1.Items.Add(RadListDataItem2)

Me.RadDropDownList1.Items.Add(RadListDataItem3)

Me.RadDropDownList1.Items.Add(RadListDataItem4)

Me.RadDropDownList1.Items.Add(RadListDataItem5)

Me.RadDropDownList1.Location = New System.Drawing.Point(65, 40)

Me.RadDropDownList1.Name = "RadDropDownList1"

Me.RadDropDownList1.ShowImageInEditorArea = True

Me.RadDropDownList1.Size = New System.Drawing.Size(106, 20)

Me.RadDropDownList1.TabIndex = 0

'

'CheckBox1

'

Me.CheckBox1.AutoSize = True

Me.CheckBox1.Location = New System.Drawing.Point(65, 83)

Me.CheckBox1.Name = "CheckBox1"

Me.CheckBox1.Size = New System.Drawing.Size(81, 17)

Me.CheckBox1.TabIndex = 1

Me.CheckBox1.Text = "CheckBox1"

Me.CheckBox1.UseVisualStyleBackColor = True

'

'Form10

'

Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)

Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font

Me.ClientSize = New System.Drawing.Size(292, 273)

Me.Controls.Add(Me.CheckBox1)

Me.Controls.Add(Me.RadDropDownList1)

Me.Name = "Form10"

Me.Text = "Form10"

CType(Me.RadDropDownList1, System.ComponentModel.ISupportInitialize).EndInit()

Me.ResumeLayout(False)

Me.PerformLayout()

End Sub

Friend WithEvents RadDropDownList1 As Telerik.WinControls.UI.RadDropDownList

Private Sub Form10_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load

For Each item In RadDropDownList1.Items

item.ForeColor = If(CInt(item.Value) Mod 2 = 0, Color.Red, Color.Black)

Next

RadDropDownList1.AutoCompleteMode = AutoCompleteMode.SuggestAppend

AddHandler RadDropDownList1.DropDownListElement.AutoCompleteSuggest.DropDownList.PopupOpening,

Sub()

If Not CheckBox1.Checked Then Return

For Each item In RadDropDownList1.DropDownListElement.AutoCompleteSuggest.DropDownList.Items

' can't think of a way to get the value from the original list

If item.Value IsNot Nothing Then

item.ForeColor = If(CInt(item.Value) Mod 2 = 0, Color.Blue, Color.Green)

ElseIf item.Tag IsNot Nothing Then

item.ForeColor = If(CInt(item.Tag) Mod 2 = 0, Color.Blue, Color.Green)

Else

item.ForeColor = Color.Orange

End If

Next

End Sub

AddHandler RadDropDownList1.DropDownListElement.AutoCompleteSuggest.DropDownList.ListElement.VisualItemFormatting,

Sub(sender1 As Object, ee As VisualItemFormattingEventArgs)

If Not CheckBox1.Checked Then

' can't find any way to get the RadDataListItem to find out the business rule to change the colour

ee.VisualItem.ForeColor = Color.Brown

End If

End Sub

End Class

DropDownList

answered on 02 Dec 2011

1 answer

159 views

count filtered rows in group

Hi:
Is there a way of counting the visible rows after applying a filter or multiple filter and a group or many group?
eg: There is a group template by Age column and I apply a filter in city column. How can I count the filtered rows?

   Our code as follows:
  radGridView_Filtered(.......)
{
    label1.Text= radGridView.MatserTemplate.ChildRows.Where(o=>o.City='NanJing').Count;
}

If there is only filter ,the label1's text display filtered rows .But if there is a group ,the label1's text display zero.
I want the label1's text display filtered rows .

Greeting
Look forward to you
AJing

GridView

answered on 02 Dec 2011

1 answer

156 views

from current row to next row by Enter key in group and filter

Hi :
     The radgridview enable group and filter. The user want to skip the next row from current row and the next row into edit mode by Enter.
       1. Our code as follows to achieve the enter key, :
        private voi dg_KeyUp(.....)
        {                  ......
              if((dgCut.CurrentRow.Index+1)<dgCut.Rows.Count)
              {
                     var row =dgCut.Rows[dgCut.CurrentRow.Index+1];
                     dgCut.CurrentRow=row;
                     if(dgCut.CurrentCell!=null)
                     { dgCut.CurrentCell.BeignEdit();}
               }
         }
      but if there is a filter by column 'Name', the enter key event behavior is strange.The current row can not skip to next row.

      To solve the problem with filter,we update the code as follows:
        private voi dg_KeyUp(.....)
        {                  ......
              if((dgCut.MasterView.CurrentRow.Index+1)<dgCut.MasterView.Rows.Count)
              {
                     var row =dgCut.MasterView.Rows[dgCut.MasterView.CurrentRow.Index+1];
                     dgCut.MasterView.CurrentRow=row;
                     if(dgCut.MasterView.ViewTemplate.CurrentColumn!=null)
                     { dgCut.CurrentCell.BeignEdit();}
               }
         }

      the result as we do is :it is Ok by Enter key if there is only exsit filter.It is not Ok if there is group and filter.
     How to achieve the enter key behavior if there is  a group or multiple group and a filter or multiple filter?

Greetings
Look forward to you
Ajing

GridView

answered on 02 Dec 2011

1 answer

1.5K+ views

Select an Item in ListBox Control on MouseDown Event

When using the standard listbox control i use the IndexFromPoint Method to get the item at the point of the mouse click...
like...

private void listBox1_MouseDown(object sender, MouseEventArgs e)

{

int index = listBox1.IndexFromPoint(e.Location);

listBox1.SelectedIndex = index;

}

is a there a way to do such with a RadListControl?

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 01 Dec 2011

3 answers

193 views

Using winforms pageview in outlook mode to open another pageview tab

Im having issues with the page view. I want to us the outlook view and next to the frist page view i have another one wich i wanted to use the tabs. What I m trying to do is when i click on one of the buttons in the outlook page view i want it to open one of the tabs in the other page view. Any Help would be Great.

PageView

answered on 01 Dec 2011

1 answer

118 views

GridView in RadDropDownList

Hi,
is it possible to view a GridView in the popup items of a Raddropdownlist?
could you please send me an example?

DropDownList

answered on 01 Dec 2011

1 answer

254 views

Tree View drag and drop issues

We are using telerik control in our Excel-Addin Application.

Functional working: we launch a form on clicking the button ("open form") at add-in ribbon. User will drag the tree nodes to spreadsheet cells.

Issues we face
1. We don't want hint of node when we perform the drag and drop on spreadsheet cell. (Version used 2010.1.10.504)
2. We tried to use the new version DLL from Telerik but some serious issue arises (Version used 2011.2.11.831)
a. item drag event is getting called multiple times.
b. Cursor remains the NO cursor after dragging the node to area of spreadsheet

Code written on item drag event is as follows

Private Sub RadTreeView1_ItemDrag(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.RadTreeViewEventArgs) Handles RadTreeView1.ItemDrag

If Not IsNothing(RadTreeView1.SelectedNode) Then

Dim strSelected As String = RadTreeView1.SelectedNode.Text

RadTreeView1.DoDragDrop(" ", Windows.Forms.DragDropEffects.Copy)

Globals.ThisAddIn.Application.ActiveCell.Value = "LB (" & "" & ControlChars.Quote.ToString() & strSelected & ControlChars.Quote.ToString() & "" & ")"

End If

End Sub

Please do provide the solution.

Treeview

answered on 01 Dec 2011

2 answers

93 views

Q3 upgrade error...

Got a notification to upgrade, so I did...I have 3 projects under my solution, 2 of which use Telerik WinForms...one project updated just fine, the other fails...I get the following error message:

Error executing custom action
Telerik.WinControls.VSXActions.UpdateReferencesAction: Object
reference not set to an instance of an object.

after which, it removed all Telerik references from the project in which it failed...now it gives me the option to 'Convert to Telerik WinForms Application' which I tried...then I selected the GridView, which auto selects the other ones that are needed...I click finish, and I get the exact same error as above.

thoughts?

Visual Studio Extensions

answered on 30 Nov 2011

5 answers

455 views

Adding Multiple Header Rows at Runtime in RadGrid

I need to build a grid with 2 header rows where each column in the 1st header row groups few columns in the 2nd header row.
And the 2nd header row is in 1:1 relation with the grid columns.

For example:

Sunday			Monday
Morning	Afternoon	Evening	Morning	Afternoon	Evening

How do I implement that in RadGrid?

Thanks in advance.

GridView

answered on 30 Nov 2011