Questions on UI for WinForms Forum

6 answers

1.1K+ views

Show displaymember value instead of valuemember value

Hi guys,

I have a customized grid where i change the type of the editorElement in one cell based on the value on another cell.
One of this editors are the RadDropDownListEditorElement. The displaymembers shows nicly when dropped down.
But when i choose one of the elements in the dropdown list, the dropdown closes and the valuemember is presented in the cell.

I need the valuemember in some operations after this, but i want the cell to show the displaymember.

Here is the code in the CellEditorInitialized:

void TextCodeGridView_CellEditorInitialized(object sender, Telerik.WinControls.UI.GridViewCellEventArgs e)

{

var editManager = sender as GridViewEditManager;

var editor = editManager.ActiveEditor as RadDropDownListEditor;

if (editor == null) return;

var editorElement = ((RadDropDownListEditor)editor).EditorElement;

switch (e.ColumnIndex)

{

case 0:

var tcArray = _db.TCs.Where(t=>t.TC_GROUP_MEMBERs.Any(tcg=>tcg.TC_GROUP.LAND_IDX == Startup.CurrentConsultant.CountryId)).ToList();

tcArray.Insert(0, null);

((RadDropDownListEditorElement)editorElement).DataSource = tcArray;

((RadDropDownListEditorElement)editorElement).DisplayMember = "TC1";

((RadDropDownListEditorElement)editorElement).ValueMember = "TC1"; ;

if (this.TextCodeGridView.CurrentRow.Cells[0].Value == null)

((RadDropDownListEditorElement)editorElement).SelectedIndex = 0;

else

((RadDropDownListEditorElement)editorElement).SelectedIndex = tcArray.IndexOf(_db.TCs.SingleOrDefault(t => t != null && t.TC1 == this.TextCodeGridView.CurrentRow.Cells[0].Value));

break;

case 1:

var tclistArray = _db.TC_LISTs.Where(t => t != null && t.TC == this.TextCodeGridView.CurrentRow.Cells[0].Value).ToList();

tclistArray.Insert(0, null);

((RadDropDownListEditorElement)editorElement).DataSource = tclistArray;

((RadDropDownListEditorElement)editorElement).DisplayMember = "TEXT";

((RadDropDownListEditorElement)editorElement).ValueMember = "VALUE"; ;

((RadDropDownListEditorElement)editorElement).SelectedIndex = tclistArray.IndexOf(tclistArray.SingleOrDefault(t => t != null && t.ISDEFAULT));

this.TextCodeGridView.CurrentRow.Cells[1].Value = tclistArray.SingleOrDefault(t => t != null && t.ISDEFAULT).TEXT;

break;

}

GridView

answered on 04 Nov 2020

1 answer

127 views

Custom Items cause infinity loop

Hello all,

i am trying to follow the official tutorial considering custom items for the RadPropertyGrid (https://docs.telerik.com/devtools/winforms/controls/propertygrid/custom-items) in a Progress Openedge 11.7 environment. I set up a test project consisting of a Form that holds a RadPropertyGrid and a Button whose Click Event will set the SelectedObject of the RadPropertyGrid. All other classes are more or less exactly translated into OpenEdge code from the tutorial.

The problem appears to be the assignment of the "ItemElementType" in the custom CreateItemElement

On the line "e:ItemElementType = TypeHelper:GetType("CustomItemElement")." the client begins to fire the event again and cause an infinit loop of event calls.

I could provide the sample project as .7zip if you like.

PropertyGrid

answered on 04 Nov 2020

3 answers

363 views

Export data with view definition from radgridview to excel

HI,

I tried to export from my winform radgridview data which contains view definition using example provided in link https://docs.telerik.com/devtools/winforms/controls/gridview/exporting-data/spread-export. Once I tried this code application is not compiling. There were no errors in output window when we carefully checked I found that there is an error related to SpreadExportRenderer. The error was "error BC30002: Type 'Telerik.WinControls.Export.SpreadExportRenderer' is not defined". My TelerikExport.dll version is 2016.1.216.20. Can you please help me out how to solve this issue.

Regards

Harsha D

GridView

answered on 04 Nov 2020

26 answers

653 views

[Solved] filtering on a command column

can this be done?

I enabled filtering on my command column buy setting

.AllowFiltering =

true

I also have a cellformatting event that will change the button text based on a date but I no longer am able to ref the cell.commandbutton as the cell type has changed from "GridCommandCellElement" to
"GridFilterCellElement"

GridView

answered on 04 Nov 2020

1 answer

265 views

Rename the selected tab title

Hi

This code correctly changes the name of the tab after a myUserControl is added.
How can I change the title of the selected tab anywhere in the program without calling RadTabbedFormControlEventArgs e?

code snippet:

private void radTabbedFormControl1_TabAdded(object sender, RadTabbedFormControlEventArgs e)

{

UserControl1 myUserControl = new UserControl1();

myUserControl.Dock = DockStyle.Fill;

e.Tab.Controls.Add(myUserControl);

e.Tab.Owner.SelectedTab = e.Tab;

e.Tab.Text = myUserControl.this_title;

}

TabbedForm

answered on 02 Nov 2020

1 answer

178 views

Change tab icon and title

Hi

How to change the icon and title of the selected tab while running the program?

TabbedForm

answered on 02 Nov 2020

1 answer

586 views

How to add or close tab dynamically?

Hi

When the program start one tab is open by default. How do i close that and open my tab dynamically?

TabbedForm

answered on 02 Nov 2020

5 answers

199 views

Set Defaults on New Appointment

Is there a way to do this? I don't see a way to set any defaults (Status, Reminder Time, Background, Resource, etc).

I can populate the various lists with custom options, but not set any of them by default.

Scheduler and Reminder

answered on 02 Nov 2020

6 answers

1.9K+ views

[Solved] DragEnter & DragOver events not firing

Hi,

There are a few articles/posts that seem to have answer and resolved this issue but in actual fact, I still cannot get this feature to work with Telerik RadGridView.

So I appreciate your help.

I've implemented a working version of this example: https://docs.telerik.com/devtools/winforms/controls/gridview/rows/drag-and-drop

I now want to handle DragEnter & DragOver events for the target grids.

I've read all relevant articles but none seem to work. The events do not fire!

Could you provide a working source code for the article above where the two events do actually fire please?

The only way I could get this to work is by using Microsoft's Control.DoDragDrop method which is I know is not the correct way as it mixes Telerik's and Microsoft's approaches.

Thanks

GridView