Questions on UI for WinForms Forum

4 answers

354 views

Change RadMenuItems visibility in controls collection

Hi all,

I have a RadMenu1 control, with inside 10 controls (named RadMenuItem1,RadMenuItem2,RadMenuItem3,...)

How can I change the visibility of the RadMenuItem elements in a loop ?

I try to use :
for i=1 to 10 me.controls("RadMenuItem" & i.tostring).visible=False or True but it don't work !

Thanks

General Discussions

answered on 22 Jan 2013

0 answers

61 views

RadPanel or RadScrollablePanel designt ime Scroll not supported?

RadPanel or RadScrollablePanel design time Scrolling not supported?
like winform panel

ScrollablePanel

asked on 22 Jan 2013

0 answers

79 views

grouped checkbox column in radgrid

Hi ,
Is possible to check and uncheck the checkbox column is grouped in telerik radgrid by clicking button,
please give solution for this.

GridView

asked on 21 Jan 2013

1 answer

77 views

RadDateTimeEditor Keyboard navigation issue.

Hi,
We have a very specific requirement , where the user would like to enter Date in the RadGridView Cell which has editor of type RadDateTime Editor . In this cell the the user will be entering date in format MM/dd/YYYY and while entering the date the user should be allowed to continuously type the date without having to use the arrow keys to navigate between date, month and year. For example if user types a date like "02172013" the RadDateTimeEditor should automalically fill up the month portion (once "02" is typed) and then push the cursor to date portion when user types "17" and then push the cursor to year portion once user starts typing "2013" and finally dispaly the date as "02/17/2013"

1)User has to use the arrow key to move from month section to date then again he need use arrow keys to move from date to year, as expalined above this should not be required.

2)When we click on the cell having RadDateTime Editor and tabs out of the cell then the date cell gets populated with current date . Expected behaviour is if user has not entered/selected any date then it should default to blank.

Please let me know if such a thing is possible using RadDateTimeEditor ? or I need to use some other editor ?

We are using the following code :

Private

Sub RadGridView_EditorRequired(ByVal sender As Object, ByVal e As EditorRequiredEventArgs)

Dim fieldType As String = RadGridView.CurrentRow.Cells(CELL_FIELD_TYPE).Value.ToString()

e.Editor = GetEditor(fieldType)

End Sub

Private

Function GetEditor(fieldType As String) As IValueEditor

Select

Case fieldType

Case

Constants.EDITOR_DATE

Dim

editorDate As RadDateTimeEditor = New RadDateTimeEditor()

Dim calendar As RadDateTimeEditorElement = DirectCast(editorDate.EditorElement, RadDateTimeEditorElement)

calendar.Format =

DateTimePickerFormat.Short

calendar.AllowDrop =

True

                    ......
                    ..........

End

Select

End

Function

Thank you,
Ashwin

Calendar, DateTimePicker, TimePicker and Clock

answered on 21 Jan 2013

3 answers

459 views

Exception with Drag and Drop

I have a problem when dragging a tree node into a panel. In the Drag Drop event of the panel , I try to add a control to the panel and then I get the following exception :

System.ComponentModel.Win32Exception was unhandled by user code
Message=Error creating window handle.
Source=System.Windows.Forms
ErrorCode=-2147467259
NativeErrorCode=1411
StackTrace:
at System.Windows.Forms.NativeWindow.CreateHandle(CreateParams cp)
at System.Windows.Forms.Control.CreateHandle()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at System.Windows.Forms.Control.ControlCollection.Add(Control value)
at TestTreeView.Form1.panel1_DragDrop(Object sender, DragEventArgs e) in E:\Users\Meir\Documents\Visual Studio 2010\Projects\MilestoneTesting\TestTreeView\Form1.cs:line 37
at System.Windows.Forms.Control.OnDragDrop(DragEventArgs drgevent)
at System.Windows.Forms.Control.System.Windows.Forms.IDropTarget.OnDragDrop(DragEventArgs drgEvent)
at System.Windows.Forms.DropTarget.System.Windows.Forms.UnsafeNativeMethods.IOleDropTarget.OleDrop(Object pDataObj, Int32 grfKeyState, Int64 pt, Int32& pdwEffect)
InnerException:

This does not happen to me if I am using Microsoft Tree control.
I am using Telerik for Windows Forms , updated to Dec 11, 2012

Here is the code snippet:

using System;

using System.Linq;

using System.Windows.Forms;

using Telerik.WinControls.UI;

namespace TestTreeView

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void Form1_Load(object sender, EventArgs e)

{

radTreeView1.AddNodeByPath("\\test");

radTreeView1.ExpandAll();

radTreeView1.ShowFeedbackForm = false;

}

private void radTreeView1_DragStarted(object sender, Telerik.WinControls.UI.RadTreeViewDragEventArgs e)

{

DoDragDrop(e.Node, DragDropEffects.Move);

}

private void panel1_DragDrop(object sender, DragEventArgs e)

{

Label test = new Label();

panel1.Controls.Add(test);

}

private void panel1_DragEnter(object sender, DragEventArgs e)

{

e.Effect = DragDropEffects.Move;

}

The command "panel1.Controls.Add(test);" generates the exception.
What am I doing wrong?

Below is also the form designer code:

namespace TestTreeView

{

partial class Form1

{

/// <summary>

/// Required designer variable.

/// </summary>

private System.ComponentModel.IContainer components = null;

/// <summary>

/// Clean up any resources being used.

/// </summary>

/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>

protected override void Dispose(bool disposing)

{

if (disposing && (components != null))

{

components.Dispose();

}

base.Dispose(disposing);

}

#region Windows Form Designer generated code

/// <summary>

/// Required method for Designer support - do not modify

/// the contents of this method with the code editor.

/// </summary>

private void InitializeComponent()

{

this.radTreeView1 = new Telerik.WinControls.UI.RadTreeView();

this.panel1 = new System.Windows.Forms.Panel();

((System.ComponentModel.ISupportInitialize)(this.radTreeView1)).BeginInit();

this.SuspendLayout();

//

// radTreeView1

//

this.radTreeView1.AllowDragDrop = true;

this.radTreeView1.AllowDrop = true;

this.radTreeView1.Location = new System.Drawing.Point(31, 35);

this.radTreeView1.Name = "radTreeView1";

this.radTreeView1.Size = new System.Drawing.Size(243, 348);

this.radTreeView1.SpacingBetweenNodes = -1;

this.radTreeView1.TabIndex = 0;

this.radTreeView1.Text = "radTreeView1";

this.radTreeView1.DragStarted += new Telerik.WinControls.UI.RadTreeView.DragStartedHandler(this.radTreeView1_DragStarted);

//

// panel1

//

this.panel1.AllowDrop = true;

this.panel1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;

this.panel1.Location = new System.Drawing.Point(289, 127);

this.panel1.Name = "panel1";

this.panel1.Size = new System.Drawing.Size(146, 100);

this.panel1.TabIndex = 1;

this.panel1.DragDrop += new System.Windows.Forms.DragEventHandler(this.panel1_DragDrop);

this.panel1.DragEnter += new System.Windows.Forms.DragEventHandler(this.panel1_DragEnter);

//

// Form1

//

this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);

this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;

this.ClientSize = new System.Drawing.Size(475, 395);

this.Controls.Add(this.panel1);

this.Controls.Add(this.radTreeView1);

this.Name = "Form1";

this.Text = "Form1";

this.Load += new System.EventHandler(this.Form1_Load);

((System.ComponentModel.ISupportInitialize)(this.radTreeView1)).EndInit();

this.ResumeLayout(false);

}

#endregion

private Telerik.WinControls.UI.RadTreeView radTreeView1;

private System.Windows.Forms.Panel panel1;

}

Thanks
Meir

Treeview

answered on 21 Jan 2013

1 answer

75 views

ribbontab minimize when clicking on start menu

Hi
How can i minimize Ribbon Tab when clicking on start menu if ribbon bar expanded property is set to true

Best Regards,
Randy

RibbonBar

answered on 21 Jan 2013

1 answer

120 views

WinForms - Hay theme

Hi,

Is there a hay theme available for winforms? or anything greenish like Forest, Hay?

Thanks

Themes and Visual Style Builder

answered on 21 Jan 2013

5 answers

697 views

How to multiply the gridview column with a number without saving to database

Hello Team,

I have a gridview with 6 columns , when clicked on contextmenu of grid for specific column, a conversion from one unit of measurement to other should take place

like the above image showing the conversion units, for example from meter-feet is m-ft
when user clicks this, i need to take the entire column of grid and multiply the column with 3.281 and rebind it to grid
i dont want to loop through the grid as the number of records are more than 40,000

is there any fastest way to achieve this, or in telerik any other options ???

this one i am doing with out saving to database, please help me

GridView

answered on 21 Jan 2013

1 answer

69 views

Can I get an example of using the ForEach(Action<RadTreeNode> action) method?

this.radTreeView_Plans.ForEach(???);

What is "Action"?

Treeview

answered on 21 Jan 2013

3 answers

148 views

mouse over text VB.NET

1. what am I trying to achieve:

in windows based application written in VB.NET using VS 2010 based on the results of questionnaire I am creating summary statement that consists of logical parts that I call declarations. when mouse go over the "declaration" I need it to change color and if user right clicks on the "declaration" I would like to open menu of substitute choices, option to create new declaration on the fly and delete existing one from the text. will appreciate advise on whether I can use any custom text control to achieve my goals. Thank you.

General Discussions

answered on 18 Jan 2013