Questions on UI for WinForms Forum

2 answers

270 views

RadPageView didn't release the previous page selection.

Hi!
Im using VB.NET and had created a RadPageView with 2 page.

1st page call = A
2nd page call = B

When first time load A is an default selected page.
When i click on page B it will do checking either file is exist.
if not exist than msgbox will popup and use code to select back the page A

Display page of A is correct but the B button is still in selected mode.
Mean i can see 2 page is selected.

My viewmode for the RadPageVIew is STACK

Hope to get the reply soon.

Thank you!

Regards
Johnny

PageView

answered on 21 Jun 2011

1 answer

148 views

Changing cell backColor problem

hi
i am developing an online trading application using telerik winfroms products and i have a very annoying scenario;
i am using rad Gridview to represent the marked data, when some updates comes from the server i have to update the data in the grid with this feed and change the cell back color based on that data, if the new value is greater than the old value i have to change the cell back color to green and if the new value is less than the old value i have to change the cell back color to red, The problem is i can't change the cell back Color in any method in my form and when i use the CellFormatting event i can't know the old value to make the compare and i can't store this old value in a global variable because its a muti threading application and the updates come so fast.
any ideas?
thank you

GridView

answered on 21 Jun 2011

4 answers

257 views

Scroll to child row

I have a hierarchic GridView and I want to scroll to the selected row after a new databind of the control.
If I do

this.radGridView1.TableElement.ScrollToRow(this.radGridView1.CurrentRow);

no problem if the current row is a parent row but if the current row is a child row the GridView scroll to the end.
How to scroll to a selected child row?
Thanks

GridView

answered on 21 Jun 2011

1 answer

133 views

MultiColumn ComboBox - Double Lines

I am trying to use your combo box that when it is dropped down the contents displayed show two lines of data for each row, but I cannot find out what properties I need to set.

You can see an example found on this page http://www.telerik.com/products/winforms/multicolumncombo.aspx under "Rotating Items on Double-Click."

MultiColumn ComboBox

answered on 21 Jun 2011

3 answers

308 views

RadGroupBox BackColor from Form insead of RadPage

Hello.
I have RadGroupBox control placed on RadPageView. The problem is with RadGroupBox colors: in desing mode everything is ok (see desinger.PNG from atachement), but when I run my application, the BackColor of RagGroupBox seems to be from main form instead of PadPage (see running.PNG), so it looks strange.

How to fix this problem?

(version Q1 2011, WinForms)

Thanks in advance.
Darek.

GroupBox

answered on 21 Jun 2011

4 answers

161 views

Visibility of a page

Hi,

Is there a way to hide a tab without removing it from the Pages collection? Can't find a property to do that.

Thanks!

PageView

answered on 20 Jun 2011

1 answer

213 views

Data binding Formatting the Cells

Hi,

I have a requirement where I have to compare dates which are in the binded data set to grid. The priority column has to be set to a value and format the cell color to red/orange/gree based on the value of Targetdt and warningdate which is available in the datasource binded to the grid.

I am doing the following.

void rGridViewTasks_ViewCellFormatting(object sender, CellFormattingEventArgs e)

        {

                if (e.CellElement.ColumnInfo.Name == "Priority")

{

//if ((DateTime)e.CellElement.RowInfo.Cells["TargetDt"].Value >= DateTime.Now )

//{

// e.CellElement.BackColor = Color.DarkRed;

// e.CellElement.Value = "1";

//}

//else if (((DateTime)e.CellElement.RowInfo.Cells["WarningDate"].Value >= DateTime.Now) &&

// ((DateTime)e.CellElement.RowInfo.Cells["TargetDt"].Value < DateTime.Now))

//{

// e.CellElement.BackColor = Color.DarkOrange;

// e.CellElement.Value = "2";

//}

//else

//{

// e.CellElement.BackColor = Color.DarkGreen;

// e.CellElement.Value = "3";

//}

}



}

the above WarningDate and TargetDt columns are not added as the columns in the grid, hence they are coming as null and giving a exception.

I checked the rowinfo databounditem and it is also null. Please advice.

regards,
Khizar

GridView

answered on 20 Jun 2011

1 answer

187 views

Ribbon Bar BackStage View Exception

I am using Telerik Ribbon on my Application's Main Form. which I call from the Login Form within a Separate Thread (i.e. I start a thread, and within that thread, I load Main Form) using Application.Run(new frmMain()). On Main Form's Load Event, I am selecting a tab of Back Stage View dynamically. using following code

mainRibbon.BackstageControl.SelectedItem = bsvTabAccount;
mainRibbon.BackstageControl.ShowPopup(new System.Drawing.Point(0, 56), mainRibbon.RibbonBarElement);

My problem is, if I hit Enter key on back stage view, application throws exception which states,

System.NullReferenceException: Object reference not set to an instance of an object.
at Telerik.WinControls.UI.BackstageViewElement.ProcessKeyboardSelection(Keys keyCode)
at Telerik.WinControls.UI.RadRibbonBarBackstageView.OnKeyDown(KeyEventArgs e)
at System.Windows.Forms.Control.ProcessKeyEventArgs(Message& m)
at System.Windows.Forms.Control.ProcessKeyMessage(Message& m)
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)

Note: Exception does not appear if I click any tab of back stage view before I press Enter key.

Any help would be highly appreciated.

RibbonBar

answered on 20 Jun 2011

4 answers

133 views

combobox without dropdown.

Hi,

i have a datasource where there is a status column and it is a enumerator having just a status code, I have a requirement that it should show the status text in the grid, but the control should not be a dropdown, it is just a simple text field in the grid.

is this possible to implement something like a combo or lookup but not as a dropdown field?

Regards,
Khizar

GridView

answered on 20 Jun 2011

5 answers

902 views

how to install internal build?

how do i install the internal builds? where do i need to put he assemblies? in GAC or somewhere else? and do i have to add them to the toolbox manually?

General Discussions

answered on 20 Jun 2011