Questions on UI for WinForms Forum

5 answers

331 views

radtreeview drag

Hi,

I'm trying to drag a radtreeview node into a radtextbox. I just want the information stored in the node "ToolTipText" to be displayed in the radtextbox.I did the following:
1. Set radtreeview AllowDragDrop to true
2. Set readtxtbox AllowDrop to true
3. In order to block radtreeview nodes to be moved in the tree I implemented a "DragEnding" event:

private void treeview_DragEnding(object sender, Telerik.WinControls.UI.RadTreeViewDragCancelEventArgs e)

{

e.Cancel = true;

}

4. I also implemented a "ItemDrag":

private void treeview_ItemDrag(object sender, Telerik.WinControls.UI.RadTreeViewEventArgs e)

{

DoDragDrop(e.Node, DragDropEffects.Copy);

}

5. In the radtextbox I implementeded the following "DragEnter" event:

private void textbox_DragEnter(object sender, DragEventArgs e)

{

IDataObject dataObject = e.Data;

if (dataObject == null)

e.Effect = DragDropEffects.None;

else

{

Telerik.WinControls.UI.RadTreeNode Node = dataObject.GetData(typeof(Telerik.WinControls.UI.RadTreeNode)) as Telerik.WinControls.UI.RadTreeNode;

if (Node != null)

e.Effect = e.AllowedEffect;

else

e.Effect = DragDropEffects.None;

}

6. I also implemented the "DragDrop"event for the textbox:

private void textbox_DragDrop(object sender, DragEventArgs e)

{

IDataObject dataObject = e.Data;

if (dataObject != null)

{

Telerik.WinControls.UI.RadTreeNode Node = dataObject.GetData(typeof(Telerik.WinControls.UI.RadTreeNode)) as Telerik.WinControls.UI.RadTreeNode;

if (Node != null)

textbox.Text = textbox.Text.Insert(textbox.SelectionStart, "Ok");

}

the problem is that the opration is not working. When I move a node over the radtextbox the program frozes. I used the VS "debug | break all" menu option and the stack has a lot of "_ItemDrag" event calls.

Any ideas?

Thanks,

Francisco

Treeview

answered on 30 Nov 2012

1 answer

119 views

Check if appointment intersects with other appointment

Hi all,

How can I check if an appointment intersects with an other appointment?

I'm using the radscheduler for a planning tool. I'm using recurring appointments to determent the work scheduler for the employees.
But I can't figure out how to check if the appointments intersects with the recurrencerule of the appointments.

Edit
I also would like to know how I can add an appointment for every resource. This specifically for the holydays (Christmas for instance)

greetings

Scheduler and Reminder

answered on 30 Nov 2012

4 answers

140 views

Data Form Control

Hi Telerik Team, In Radcontrols for WPF and for Silverlight there is a Dataform control. Is there something similiar in Radcontrols for Winforms as there is a Formcontrol? Is there a sample available? Or do I have to create the control or form myself? Thank you. Kind regards, Joerg

Form

answered on 30 Nov 2012

1 answer

69 views

cell display based on value

I have a gridview cell that contains either 1 or 2 but that is not what I want displayed in the cell. I want a letter displayed lets say "X" or "Y". I have looked at the different cell formatting methods but they are all color or font based and not a substitution of value.

Any thoughts on this?

Thanks,
Richard

GridView

answered on 29 Nov 2012

1 answer

70 views

Circular points on line series

Is there anyway to hide the circular points on line series so that it is a smooth line?

ChartView

answered on 29 Nov 2012

5 answers

173 views

Bind different datasource to single comboboxcolumn

Hi,
I have a comboBoxcolumn displaying the value based on other column. Say for example the possible values in other column are "Color" and "Fruits". When a cell in the comboBoxcolumn is edited then the values displayed in the list should be based on the value in the other column. If the value in the other column is "Color" then the cell being edited in the comboBoxcolumn should display the list of colors alone. Similarly when the value in the other column is "Fruits" then the cell being edited in the comboBoxcolumn should display the list of fruits alone.

How can the datasource be assigned at the ComboBoxcell level?

Thanks in advance.

GridView

answered on 29 Nov 2012

3 answers

248 views

RadGridView very slow in virtual mode

Hi

I have been having a lot of trouble get RadGridView to work in virtual mode. If the RowCount is set to a large number it makes the scrolling very choppy and slow to respond. It can take up to 5 seconds for the grid to show the row data after the scroll bar is moved. I have created a test program to strip out all my code and it proves the problem is with the grid. There seems to be a lot of overhead somewhere. Don't know why the RowCount should affect performance if this is truly a virtual mode and I provide the data in CellValueNeeded then you should not be doing much. By the way, tried my code with DataGridView and it works really fast and can handle the row count being updated continuously and autoscrolling to bottom. I would expect the example program below to be incredibly fast - am I missing something?

namespace RadControlsWinFormsApp1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();

radGridView1.VirtualMode = true;
radGridView1.RowCount = 1000000;
radGridView1.ColumnCount=5;

}

private void radGridView1_CellValueNeeded( object sender, Telerik.WinControls.UI.GridViewCellValueEventArgs e )
{
e.Value = string.Format( "{0}:{1}", e.RowIndex, e.ColumnIndex );
}
}
}

GridView

answered on 29 Nov 2012

1 answer

852 views

GridView Hide Certain Columns

Hey, I have a gridview where, i am binding it as follows ::
grdView.DataSource = dsNames;
The datasource 'dsNames' has 10 columns and, I want to only show 2 columns in the grid. how do i do that?

Also, i tried adding the 2 required columns in the designer and set the auto generatecolumns to false. If i do it this way, no data is displayed.

Please let me know how to do binding.

Thanks,
Sri

GridView

answered on 29 Nov 2012

1 answer

80 views

failing property data types

The following list of built-in data types that the PropertyGrid control fails to set properly:

uint (reverts to 0)
decimal (reverts to 0)

There might be other number types that fail, not sure.

Workaround?

PropertyGrid

answered on 29 Nov 2012

5 answers

161 views

Exporting images from default themes

Hi,

I'm working on a project where the designers want a purple shade to selected items. The Office2010Silver theme is quite close to what they want, but I would have to change some elements to purple.

At first, I thought the "AddColorBlend" was the way to go, but it seems that color blending is no longer supported.

I can always edit the repository items one by one and change to purple equivalents where necessary, but I've run into some trouble with the images, as I found no way to export the images in an existing theme.

Is there a way to export a image from a theme, or copy it to the clipboard, so that the hue is changes in an external app?

Thanks,
Miguel

Themes and Visual Style Builder

answered on 29 Nov 2012