Questions on UI for WinForms Forum

1 answer

139 views

Hello,

i have implemented a method that prevent the selections of cells in the first 3 columns. this method works, but it is extreme slowly. This is my method. Is there a better way to prevent selection?

private void Event_SelectionChanged(object sender, EventArgs e)

{

GridViewCellInfo[] cells = (from GridViewCellInfo entry in

this.SelectedCells where entry.ColumnInfo.Index <

CurveContentGridView.FIRST_DATACOLUMN_INDEX ||

entry.RowInfo.Index == -1

select entry).ToArray();

for (int i = 0; i < cells.Length; i++)

{

cells[i].IsSelected = false;

}

GridView

answered on 26 Jul 2010

8 answers

287 views

Q2 Gridview Changes

I am trying to implement the new Q2 controls and am having the following issues with the GridView:

1) I have a routine that changes a regular GridViewTextBoxColumn to a GridViewCheckBoxColumn. Because in the previous grid, you couldn't just change the type of the column, I had to record the column index, remove it, create a new GVCBC and set the index of it. The index property is no longer settable.

2) I have a method that lets me programatically set the selected row. I used to say SelectedRows.Clear() and then Rows[x].Selected = true; Now the Clear() method is missing from the SelectedRows collection.

Thanks in advance,

Lars Solberg

GridView

answered on 26 Jul 2010

1 answer

152 views

adding gridviewcomboboxcolumn in datagridview

Hi

i would like to add the gridviewcomboboxcolumn in datagridview to get autocomplete functionality. i could not find a way to do this, can any body help me.

i have tried a lot and i cant change my orignal grid with the telerik one.

quick reply would be appreciated.

thanks.

GridView

answered on 26 Jul 2010

7 answers

581 views

[Solved] Doubleclick row in grid - ignore scrollbar?

Hi. I'm trying to do something straightforward but getting caught on an odd problem. I want to pop open a dialog when a user double-clicks on a row in a grid. Not seeing an event specifically for "double-clicking on a row", I am hooking RadGridview.DoubleClick. When the event handler is called, I check to see if just one row is selected, and if so, I pop open my dialog.

However, I am having a problem where if the user selects a row (single-click), then double-clicks the scrollbar I cannot distinguish that the user didn't double-click on a row. How can I prevent this from happening?

I think I need one of the following:
* A better event to hook
* A way to programmatically figure out if the user double-clicked on a row
* A way to programmatically figure out if the double-click is on the scrollbar so that I might ignore it (NOTE: the doubleclick event does not provide the mouse coordinates, so this is hard)

I'm running VS 2008, .NET 3.5, and Telerik WinForms controls 2010 Q1 SP2 all on Win 7 x64.

Thanks,
Patrick

GridView

answered on 26 Jul 2010

1 answer

309 views

Hiding Checkboxes for NULL DataSet entries..?

I have a standard WinForms DataSet being populated programatically (but bound at design-time to a discrete DataSet control on the .NET form). My question is simple: how can I hide (for example) the 2nd and 3rd checkboxes if these values are NULL values in the data for that row? If they are non-NULL, I want to present the checkbox and have it be editable. However, if they are NULL in the dataset I don't want the checkbox there at all.

I can't figure out a simple (or even non-simple) way of hiding these NULL-representing checkboxes. I have tried intercepting the cell formatting event programatically but setting the various e.CellElement._ values to hide/indicate invisible/set ShouldPaint to false/etc.. All efforts to hide these NULL-backed checkboxes seem to be completely ignored by the RadControls GridView. The GridView checkbox column just treats NULL as "false" and allows the user to click them / check them to "true" anyway.

Is there a simple way to conditionally NOT display the checkbox in a RadControls GridView checkbox column, so I can hide/show them for some rows but not for others..? Help..?!

Many thanks in advance,

Ralph

GridView

answered on 26 Jul 2010

2 answers

125 views

GETTING ERROR 'gridview already declared'

I am doing a project using sql and whenever i run the form it says "gridview already declared' but i declared it only once.... plz help

GridView

answered on 26 Jul 2010

1 answer

174 views

[Solved] Proper way to add text to waitbar with radlabel.

Hello.

I know that there is no (for now) possibility to add text to waitingbar so I did some workaround for this:

var label = new RadLabel();

label.Text = "some test";

label.TextAlignment = ContentAlignment.MiddleRight;

waitingBar.EnableTheming = true;

waitingBar.RootElement.ElementTree.ThemeName = "Breeze";

waitingBar.WaitingBarElement.Value = 0;

waitingBar.Controls.Add(label);

But it looks ugly and also waitingbarelement is mostly hidden by the text.
Maybe I'm doing something wrong? Maybe there is better workaround.

thanks

WaitingBar

answered on 26 Jul 2010

1 answer

163 views

RadPageViewer MultiLine Headers

hi,

I have two questions about the new RadPageViewer.

I'm using the RadControls_WinForms_2010_2_10_713_dev. And I want to know if there is a way to have multiple line in the headers of the pages as in my picture1.

And also I want to know if the is a way to hide the headers of the pages.

thank's

Felipe

PageView

answered on 26 Jul 2010

2 answers

241 views

Setting RadPanel.Visible to True, but remains False

When the Form loads I have the RadPanel Visible Property set to false. When the User clicks a button, the Visible Property is set to true. Though it's not setting it to true.
I put a breakpoint right after the radPanel1.Visible=true, and check it's value. It's still remains false. Any help would be nice.

Panel

answered on 26 Jul 2010

2 answers

123 views

Nodes with checkboxes - perfomance Issue

Hi,

I have a node with arount 900 child nodes. I'm using your script (http://www.telerik.com/help/aspnet-ajax/tree_checkboxesallchildnodes.html) to check/uncheck all child nodes. And there is a real perfomance issue for the page.

Any suggestions how to fix it?

Thanks, Nadia

Treeview

answered on 26 Jul 2010