Questions on UI for WinForms Forum

1 answer

203 views

Is there a way to change the size of the Headers for the Document Window or Tab Tittles. I have put in this link an image and the parts I wanted to change the size are annotated with square boxes.

Dock

answered on 12 Dec 2012

6 answers

142 views

Custom- and BasicFiltering

Hi!

How can i use custom- and basic filtering combinded ?

There is a customFilterRow example, but it does not contains the basic filter row either.

I have a textBox, and on the textChanged-event i refresh the masterTemplate and the customFiltering-event is fired.
Then i do my filterSearch. Everything works fine, like in the customFiltering-example.

But after that, i want to use the basicGridFilter, but it doesn't work. if i clear the textBox i set the enableCustomFiltering to false,
and then the grid is empty. i only get basic or customFiltering to work, not both.

Thx !

The textBox (customFilter) is used for a search on the whole grid.
The FilterRow should be used to filter each row.

GridView

answered on 12 Dec 2012

3 answers

2.3K+ views

Panel Rounded Corners Issue

Hi! I am creating a panel with rounded corners, I followed the documentation here and was able to get that. The problem comes when I wanna change the color of the panel. For instance, I have a gray background on my app, and the panel has a white background. Instead of only seeing the rounded corners on the panel... I am seeing the square corners in white and then a rounded border around the panel. See screenshot. Suggestions on how to hide the square corners?

Thanks!

Panel

answered on 12 Dec 2012

2 answers

192 views

Disable Key Tips for some controls in Ribbon Bar

Hi there,

is it possible to disable the Key Tips for some specified controls in the RadRibbonBar?

I have placed a RadImageButtonElement and a RadDropDownListElement in the same RadRibbonBarGroup.

I would like to disable the Key Tip feature only for this both controls. All the other controls should be accessible by the Key Tip.

I have set the Property -> radRibbonBar1.EnableKeyMap = true; and for the other controls in the RibbionBar I assigned the KeyTip too.

At the moment the RadImageButtonElement and RadDropDownListElement get a numeric automatic key tip.

I use RadControls for WinForms Q3 2011 SP1.

If anyone has any ideas I would appreciate

Thanks in advance

Sascha

RibbonBar

answered on 12 Dec 2012

2 answers

104 views

Unsubscribing to static events on forms where DocumentWindowis parent

I have a few global static events that some of my forms subscribe to. The subscription happens in the Form.Load event of each form. Those forms are added to a DocumentWindow then to the DockManager. The subscription is great, everybody's listening fine. Now when I close a DocumentWindow, the forms OnClosing events doesn't happen thus not unsubscribing to the static event I had wired. So now when another form (document window) fires the static event I get an exception from the closed form where the static handler is trying to work but the form doesn't exists anymore.

Any ideas on how to unsubscribe to static events on forms that are children to DocumentWindows once closed?

Thanks,
Byrd

Dock

answered on 12 Dec 2012

1 answer

100 views

radgridview rowvalidating event index

Hello,
Im using telerik 2010.2.10.713 version library, i want on my radgridview to validate the filled fields by the user at the end of editing the row, i have as selection mode the fullrow select, for that purpose i used row validating event wich i used on datagridview but this didnt work on radgrid view, im trying:

if (radGridView1.Rows[e.RowIndex].Cells["usu_clave"].Value == null) { radGridView1..Rows[e.RowIndex].Cells["usu_clave"].ErrorText ="some error"; e.Cancel = true; //prevent the user to save changes return; }

<code style="color: #000;">if (radGridView1.Rows[e.RowIndex].Cells["usu_clave"].Value == null)</code><code style="color: #069;font-weight: bold;"></code><code style="color: #000;"> {</code><code style="color: #000;"> radGridView1..Rows[e.RowIndex].Cells["usu_clave"].ErrorText ="some error";</code><code style="color: #069;font-weight: bold;"></code><code style="color: #000;"> e.Cancel = true;

//prevent the user to save changes      </code><code style="color: #069;font-weight: bold;"></code><code style="color: #000;">                 return;</code><code style="color: #069;font-weight: bold;"></code>             }<br><div style=" background-color: #fff;"><span style=" "><span style=" margin-left: 0px !important;"><code style="color: #000;"></code></span></span></div>

what is going wrong?

thanks!

General Discussions

answered on 11 Dec 2012

3 answers

109 views

Argument out of range excpet while changing the grid view page size

Hi,

I have a grid view , which has paging enabled.
When i try to change the page size , i am getting the below error.

" Specified argument was out of the range of valid values.
Parameter name: ItemHierarchicalIndex

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code."

Please let me know if there is a fix for this.

Thanks,
Raghav.

GridView

answered on 11 Dec 2012

4 answers

193 views

cross-thread exception in page view

my application uses BackgroundWorker to initialize user controls and load data models for the control to keep the user interface responsive. i have a custom control which uses page view to show different custom user controls. i load data for the control and instantiate the control in a background thread. after initializations the data model and the control is added to a global list of controls. the main ui then shows the control in a tab document. now when i try to add it to the tab the page view page object throws an exception mentioning cross thread access. i have checked for cross thread access before adding the control to the tab strip. it only happens if i use a page view control inside the my custom user control. instead if i use a tab strip than page view in my custom control it works fine.

how can i avoid this exception?

PageView

answered on 11 Dec 2012

1 answer

243 views

Bar Chart picking Data from the Database

Hi,
Thanks for the great work.
Am very new to telerik Rad Charts.
I would like to Create 2 Bar Charts on 1 windows Form using VB.net with Data coming from a Database.

I am looking at creating SQL Statements for each of these 2 Charts with the X and Y axis for the Charts in mind.
i.e Select Products, Prices from ProductSale

Kindly provide a sample example that can enable me pick data from the Database and Bind this Data to the Bar Charts.
I have tried but havent been able to get a newby example of this kind from the forum yet

Thank U.

Chart (obsolete as of Q1 2013)

answered on 11 Dec 2012

2 answers

155 views

Bug: Datatable-bound Gridviews stuck in Read-Only when there is a UNION in the query

Hello

I created a new form, added a RadGridView to it, and populated it using a query containing a UNION statement.

pGrid.BeginUpdate();

// QueryDB below returns a Datatable with the resultset or the SELECT

DataTable rs = clsDBConn.QueryDB("SELECT a,b,c FROM T1 UNION SELECT a,b,c FROM T2");

pGrid.DataSource = null;

pGrid.DataSource = rs;

pGrid.MasterTemplate.AutoGenerateColumns = true;

pGrid.MasterTemplate.AllowAutoSizeColumns = true;

pGrid.MasterTemplate.AllowAddNewRow = false;

pGrid.MasterTemplate.AllowDeleteRow = false;

pGrid.MasterTemplate.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.None;

pGrid.MasterTemplate.SelectionMode = GridViewSelectionMode.FullRowSelect;

pGrid.TableElement.ShowTranslucentSelectionRectangle = true;

pGrid.ShowRowHeaderColumn = false;

pGrid.EndUpdate();

foreach (GridViewDataColumn column in pGrid.Columns)

{

column.ReadOnly = false;

}

Even with the ReadOnly=false, when I changed a cell's value and clicked elsewhere, a "Data Exception" message saying "Column 'a' is read only." poped up. I put my UNION statement in a view, called the view, and everything worked as expected.

GridView