Questions on UI for WinForms Forum

1 answer

95 views

Docking Event

hi team,

After this event what is the next sequence of events fired.

serviceDragDrop.PreviewDockPosition += new DragDropDockPositionEventHandler(serviceDragDrop_PreviewDockPosition);

For me the active document changed event does not fire sometime.

Thanks
suresh.

Dock

answered on 10 Jan 2011

3 answers

85 views

Add RadWaitingBar to RadStatusStrip Q3 2009

Hi,
I am using a trail version.

I try to add a WaitingBar to a StatusStrip. I use following code to archive this :

   waitingBar = new RadWaitingBar();
   waitingBar.BeginInit();
   Size waitingBarSize = new Size(this.radLabelElement2.Size.Width, this.radLabelElement2.Size.Height);
   waitingBar.MinimumSize = waitingBarSize;
   waitingBar.MaximumSize = waitingBarSize;
   waitingBar.EndInit();
   host = new RadHostItem(waitingBar);
   this.radLabelElement2.Margin = new Padding(0);
   this.radLabelElement2.Children.Add(host);

I just add a radLabel to the StatusStrip named radLabelElement2 and it worked but the appearence look a little bit strange :

http://h-4.abload.de/img/unbenannt1oi3.png

I use the Desert Theme but the WaitingBar got a white border. I want is transparant. How can I archive this ?

Thanks

StatusStrip

answered on 10 Jan 2011

2 answers

119 views

Upgraded Gridview version Problem

Hi,

I was using Q22009 version of Telerik control before in my project and everything was working fine. Few days back I downloaded latest version and replaced my existing refrences of telerik with new refrences .i.e. 2010.3.10.1109. All other controls are working fine but I am getting errors in gridview controls. I used new gridview in another sample project and observed that there is much difference in properties of old gridview and new gridview.

I used new and it was working fine also but as I said there are changes. So what I gues from this, I have to change all my grids now. But I have so many grids in my project and it require lot of time to change them now. I wanna to ask that is there any short way to make this chage.

Please recommmend me the easy and good solution to upgrades my controls with the latest version of Telerik.

Regards,

Ahmed Almousa

GridView

answered on 10 Jan 2011

9 answers

714 views

Multi-Column Listbox

The standard listbox supports multicolumn. Is this soemthing the RadListbox will support?

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 10 Jan 2011

1 answer

452 views

how to select value from multicolumn combobox??

Hi there....

I tried to select value from editor control then pass that to a textbox...
i'm already tried this from documentation:

Dim test As String

test = String.Format("Row changed, current Name = {0}", RadMultiColumnComboBox1.EditorControl.Rows(RadMultiColumnComboBox1.SelectedIndex).Cells("ContactName").Value)

textbox1.text = test

that code return me an error like this:

"Object reference not set to an instance of an object."

What should i do??

MultiColumn ComboBox

answered on 10 Jan 2011

5 answers

180 views

Problem with Grid / rows position

Hello, I've got a problem with the grid position
In some specific case, the rows position in the RadGridView are too high.
So when the scroll bar is at the top, you are missing some rows
And when you are at the bottom, you have empty space.

So this happen when I call BeginUpdate(); EndUpdate(); while I'm scrolling.
And only scrolling with the left click (no wheel)
Use the sample code and left clic on the scrollbar, go all the way down, and Voila.
Everything go back to normal if you use the wheel all the way to the Top. But it's not acceptable for our user

const int CST_AUTO_EXPAND_START = 15; //Last %

bool m_alreadyScroll = false;

public Form1()

{

InitializeComponent();

}

private void AddDatas()

{

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

for (int i = 0; i < 50; i++)

{

datas.Add("string" + i.ToString());

}

radGridView1.DataSource = datas;

}

public void ExpandPage()

{

m_alreadyScroll = true;

radGridView1.BeginUpdate();

//Normally I would update my datasource here threw a background worker

radGridView1.EndUpdate();

}

private void Form1_Load(object sender, EventArgs e)

{

radGridView1.GridElement.VScrollBar.ValueChanged += new EventHandler(VScrollBar_ValueChanged);

AddDatas();

}

void VScrollBar_ValueChanged(object sender, EventArgs e)

{

if (m_alreadyScroll)

return;

Telerik.WinControls.UI.RadScrollBarElement scrollBar = (Telerik.WinControls.UI.RadScrollBarElement)sender;

int maxValue = scrollBar.Maximum - scrollBar.LargeChange;

//if the scroll bar is in the bottom zone, we search for new data

if (maxValue - maxValue * CST_AUTO_EXPAND_START / 100 < scrollBar.Value)

ExpandPage();

}

GridView

answered on 10 Jan 2011

7 answers

162 views

Selected row changing unexpectedly

I am finding that if you have a sort on a colum and you edit that value so that it change position in the grid, that sometimes when you tab out of that field a completely different row is selected, and you are now editing the wrong cell.

I have been able to reproduce the behavior on the demo application - Gridview - Populate with data - select Dataset, sort by Postal Code

Its doesnt happen every time on the demo, but it does on my application (Q3 2010)

ALastair

GridView

answered on 10 Jan 2011

5 answers

232 views

Rad grid view filtering

Special characters should be validated in the grid view filter cell & Custom filter dialog from context menu

I tried the following ways and it was successful for Rad grid view filter cell

I tried validating in filter changing event while the user enters in the filter cell

If (grid.IsInEditMode = True) Then

If (grid.ActiveEditor.Value IsNot Nothing) Then

Dim strFilterCellValue As String = grid.ActiveEditor.Value

If (strFilterCellValue.Contains("*") Or strFilterCellValue.Contains("[")) Then

Dim lastIndexOfFilterCell As Integer = strFilterCellValue.Count - 1

Dim strNewFilterCellValue As String = strFilterCellValue.Remove(lastIndexOfFilterCell, 1)

grid.ActiveEditor.Value = strNewFilterCellValue

grid.CurrentCell.Editor.BeginEdit()

Return 1

Exit Function

End If

And for Custom filter menu

If (cellValue IsNot Nothing) Then

Dim totalCount As Integer = cellValue.Count

If (cellValue.Contains("*")) Then

Dim indexOfStar As String = cellValue.IndexOf("*")

Dim numOfCharsRemoved As String = totalCount - indexOfStar

Dim strNewFilterCellValue As String = cellValue.Remove(indexOfStar, numOfCharsRemoved)

grid.CurrentCell.Value = strNewFilterCellValue

grid.MasterGridViewTemplate.FilterExpressions.EndItemUpdate()

Return 2

Exit Function

End If

If (cellValue.Contains("[")) Then

Dim indexOfOpenBracket As String = cellValue.IndexOf("[")

Dim numOfCharsRemoved As String = totalCount - indexOfOpenBracket

Dim strNewFilterCellValue As String = cellValue.Remove(indexOfOpenBracket, numOfCharsRemoved)

grid.CurrentCell.Value = strNewFilterCellValue

grid.MasterGridViewTemplate.FilterExpressions.EndItemUpdate()

Return 2

Exit Function

End If

The issue is I m unable to validate both together that is for custom filter option & while the user enters in the filter cell

Thanks,

Julian

GridView

answered on 10 Jan 2011

2 answers

118 views

How to change back color for each appointment object

Hi guy! I have a question about RadScheduler. How can I change back color/Forecolor for each Appointment object in RadScheduler?. For instance, I got 2 object : app1(Appointment object), app2(Appointment object). I want app1 get red color when it show on radScheduler and app2 will get grey color also .

Thanks

Tran Dat

Scheduler and Reminder

answered on 10 Jan 2011

4 answers

146 views

MDI Merging

I've worked with menu merging with the default VS components long enough to be comfortable. I'm now working with RADMenu now but am a bit stuck.

With a MDI parent and MDI child, everything looks like it's merging like I'm used to.

I don't see the same menus merging when I add a RADDock control to the MDI parent and make any of the MDI child forms display as Document Windows. Any ideas what I might be missing or how I can accomplish this merge scenario?

Thanks

:)
jr

Menu

answered on 09 Jan 2011