Questions on UI for WinForms Forum

3 answers

162 views

[Solved] changing selection as page number changes

I've noticed that Grid.Selection.SelectedRegions returns the dataset row number values whenever a paging-enabled virtual grid page changes. i.e the selection may be on a different page than the one on view.

I'm having problems generating elegant code for moving the regions from page to page so they select from the page of data that's on view, including cases where a full page of data has less rows than the original selection.

The help file isn't very explanatory,

radVirtualGrid1.VirtualGridElement.Selection.BeginSelection(3, 1, radVirtualGrid1.MasterViewInfo, true); radVirtualGrid1.VirtualGridElement.Selection.ExtendCurrentRegion(6, 3);

If I've several individual rows selected then how do I manipulate the grid.selection.selectedregions so that I can assign the whole set of regions? following is the code Im trying but Im having a real struggle understanding what Im doing.

01.var selectionRegions = Grid.Selection.SelectedRegions;

02.var offset = Math.Abs(e.NewIndex - Grid.PageIndex);

03.var multiplier = e.NewIndex > Grid.PageIndex

04. ? PageSize * offset

05. : -PageSize * offset;

06.var newRegions = new List<SelectionRegion>();

07.foreach (var region in selectionRegions)

08.{

09. var newRegion = new SelectionRegion(region.Top * multiplier, region.Left,

10. region.Bottom * multiplier, region.Right, region.ViewInfo);

11. newRegions.Add(newRegion);

12.}

13.Grid.Selection.SelectedRegions. <- and here is where everything goes horribly wrong :)

VirtualGrid

answered on 01 Nov 2018

5 answers

487 views

Multicolumncombobox compositefilter too slow

Hi all,

I've implemented a radgridview in my project, and I need one column to search, in this case, a barcode but I have two ways for search it. The barcode and a small code which are related between. So I've implemented a multicolumncombobox and a composite filter to do this. It works, but I have a problem in some cases. When the combobox has a lot of data, the filter which has the property autocompletemode as suggestappend, it is working too slow. For example, I press one key it takes too long time to appear in the column, it appears to be freeze.

Do you know how to improve this? Or there is another control to make this purpose?

Thanks in advance.

Regards,

GridView

answered on 01 Nov 2018

1 answer

283 views

Email validation fails using rad masked edit box

Hi

I have an issue with the validation of email addresses using when the mask type is set to EMail, it is not allowing the following style of email address "t.harris@working.group" (note this is not the exact email address of obvious reasons), it does work when i append .co.uk or .com on the end.

What are the validation criteria for this EMail validation ?

Do I have to use an edit mask instead ? If so can you give an example which will allow above email address as well as those in more "normal" formats ?

Regards

Toby

MaskedEditBox

answered on 01 Nov 2018

8 answers

259 views

Masked Edit Box validation with Regex

Hello All,

Is it possible to validate the text enter as the user types (ie validate on TextChanged) as opposed to validating as focus is changed?

Thanks!!

MaskedEditBox

answered on 01 Nov 2018

1 answer

113 views

Strange behavior (PropertyGridSpinEditor)

if you completely delete the contents in the editor and press the <Enter> key, then int.MinValue is returned.

Why? In this case, you must return either null or 0 or do nothing.

PropertyGrid

answered on 31 Oct 2018

3 answers

1.7K+ views

Disable the mouse right click

On Telerik control , when I click the items using mouse right click, it calls the same function of the left click & I'm unable to disable it. Please let me know if there is any property to disable the right click.

Treeview

answered on 31 Oct 2018

1 answer

132 views

Troube adding custom nodes to treeview

Hi,

I'm able to get the samples to work but I'm having trouble adding to my project. It seems that TreeViewElement_CreateNodeElement isn't firing.

Can anyone see what I might be missing? The code below just needs a radtreeview named tvProjectPath.

Thanks in advance!!

Imports Telerik.WinControls.UI

Public Class RadForm1

Private Sub RadForm1_Load(sender As Object, e As EventArgs) Handles Me.Load

Dim rtvTest As Telerik.WinControls.UI.RadTreeView = tvProjectPath

Dim DFSRootNode As New RadTreeNode("Root0")

Dim ProdDataNode As New RadTreeNode("Child1")

Dim JobsNode As New RadTreeNode("Child2")

Dim ProjectRoot As New RadTreeNode("Child3")

'Dim ProjectFolder As New CustomTreeNodeElement()

tvProjectPath.Nodes.Add(DFSRootNode)

DFSRootNode.Nodes.Add(ProdDataNode)

ProdDataNode.Nodes.Add(JobsNode)

JobsNode.Nodes.Add(ProjectRoot)

'ProjectRoot.TreeViewElement =

End Sub

Private Sub CustomNodes_Load(sender As Object, e As EventArgs) Handles Me.Load

Dim test As String = ""

Me.tvProjectPath.ExpandAll()

End Sub

Private Sub TreeViewElement_CreateNodeElement(sender As Object, e As Telerik.WinControls.UI.CreateTreeNodeElementEventArgs)

e.NodeElement = New CustomTreeNodeElement()

End Sub

End Class

Public Class CustomContentElement

Inherits TreeNodeContentElement

Private nodeContentContainer As StackLayoutElement

Private nodeLabel As RadLabelElement

Private nodeTextBox As RadTextBoxControlElement

Protected Overrides ReadOnly Property ThemeEffectiveType() As Type

Get

Return GetType(TreeNodeElement)

End Get

End Property

Protected Overrides Sub InitializeFields()

MyBase.InitializeFields()

Me.StretchHorizontally = True

End Sub

Protected Overrides Sub CreateChildElements()

MyBase.CreateChildElements()

nodeContentContainer = New StackLayoutElement

nodeContentContainer.Orientation = Orientation.Horizontal

nodeContentContainer.StretchHorizontally = True

nodeContentContainer.StretchVertically = False

nodeLabel = New RadLabelElement

Me.Children.Add(nodeLabel)

nodeTextBox = New RadTextBoxControlElement

Me.Children.Add(nodeTextBox)

End Sub

End Class

Public Class CustomTreeNodeElement

Inherits TreeNodeElement

Protected Overrides Function CreateContentElement() As TreeNodeContentElement

Return New CustomContentElement()

'Dim node As RadTreeNode = Me.Data

End Function

Protected Overrides ReadOnly Property ThemeEffectiveType() As Type

Get

Return GetType(TreeNodeElement)

End Get

End Property

End Class

Treeview

answered on 31 Oct 2018

5 answers

154 views

Exception adding any control

I was prompted to download a new version, did so.

Created a new project using option one from the dropdown. Could not add any controls to the default form. I thought it was strange that it said [Download] but tried any ways.

Next I created a new project with option 2, worked fine.

So my question is, how do I use option one marked as [Download] even though I already downloaded it and saw zero errors?

Thanks for your time with this matter.

VS2017 Enterprise

General Discussions

answered on 31 Oct 2018

5 answers

577 views

RadForm with UserControl DPI problem

Hello.
In my program I need to create a UserControl that contains Telerik Controls and place them on forms (using RadForm). Everything looks fine until you change the DPI settings in the system. Image with the result of the work of the form in the attached files. At the top of the screen, it's just on the form, at the bottom I'm using UserControl. Tell me how to fix it. For RadForm and UserControl, I set AutoScaleMode.DPI and also I need to use the font Segoe UI 9.75

I use Telerik 2018.2 with .Net 3.5 Below I gave examples of my code (Forms and controls). I very much rely on your help and advice.

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Drawing;

using System.Data;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace Standalone.DpiTest

{

public partial class TestControl : UserControl

{

public TestControl()

{

InitializeComponent();

}

/// <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 Component 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.tableLayoutPanel1 = new System.Windows.Forms.TableLayoutPanel();

this.radLabel1 = new Telerik.WinControls.UI.RadLabel();

this.radLabel2 = new Telerik.WinControls.UI.RadLabel();

this.radTextBox1 = new Telerik.WinControls.UI.RadTextBox();

this.radTextBox2 = new Telerik.WinControls.UI.RadTextBox();

this.tableLayoutPanel1.SuspendLayout();

((System.ComponentModel.ISupportInitialize)(this.radLabel1)).BeginInit();

((System.ComponentModel.ISupportInitialize)(this.radLabel2)).BeginInit();

((System.ComponentModel.ISupportInitialize)(this.radTextBox1)).BeginInit();

((System.ComponentModel.ISupportInitialize)(this.radTextBox2)).BeginInit();

this.SuspendLayout();

//

// tableLayoutPanel1

//

this.tableLayoutPanel1.ColumnCount = 2;

this.tableLayoutPanel1.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle());

this.tableLayoutPanel1.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 100F));

this.tableLayoutPanel1.Controls.Add(this.radTextBox2, 1, 1);

this.tableLayoutPanel1.Controls.Add(this.radLabel1, 0, 0);

this.tableLayoutPanel1.Controls.Add(this.radLabel2, 0, 1);

this.tableLayoutPanel1.Controls.Add(this.radTextBox1, 1, 0);

this.tableLayoutPanel1.Dock = System.Windows.Forms.DockStyle.Fill;

this.tableLayoutPanel1.Location = new System.Drawing.Point(0, 0);

this.tableLayoutPanel1.Name = "tableLayoutPanel1";

this.tableLayoutPanel1.RowCount = 3;

this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle());

this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100F));

this.tableLayoutPanel1.Size = new System.Drawing.Size(562, 336);

this.tableLayoutPanel1.TabIndex = 0;

//

// radLabel1

//

this.radLabel1.Font = new System.Drawing.Font("Segoe UI", 9.75F);

this.radLabel1.Location = new System.Drawing.Point(4, 4);

this.radLabel1.Margin = new System.Windows.Forms.Padding(4);

this.radLabel1.Name = "radLabel1";

this.radLabel1.Size = new System.Drawing.Size(65, 21);

this.radLabel1.TabIndex = 0;

this.radLabel1.Text = "Name: ";

//

// radLabel2

//

this.radLabel2.Font = new System.Drawing.Font("Segoe UI", 9.75F);

this.radLabel2.Location = new System.Drawing.Point(4, 35);

this.radLabel2.Margin = new System.Windows.Forms.Padding(4);

this.radLabel2.Name = "radLabel2";

this.radLabel2.Size = new System.Drawing.Size(65, 21);

this.radLabel2.TabIndex = 1;

this.radLabel2.Text = "Address: ";

//

// radTextBox1

//

this

.radTextBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Left | System.Windows.Forms.AnchorStyles.Right)));

this.radTextBox1.Font = new System.Drawing.Font("Segoe UI", 9.75F);

this.radTextBox1.Location = new System.Drawing.Point(77, 4);

this.radTextBox1.Margin = new System.Windows.Forms.Padding(4);

this.radTextBox1.Name = "radTextBox1";

this.radTextBox1.Size = new System.Drawing.Size(481, 23);

this.radTextBox1.TabIndex = 2;

//

// radTextBox2

//

this

.radTextBox2.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Left | System.Windows.Forms.AnchorStyles.Right)));

this.radTextBox2.Font = new System.Drawing.Font("Segoe UI", 9.75F);

this.radTextBox2.Location = new System.Drawing.Point(77, 35);

this.radTextBox2.Margin = new System.Windows.Forms.Padding(4);

this.radTextBox2.Name = "radTextBox2";

this.radTextBox2.Size = new System.Drawing.Size(481, 23);

this.radTextBox2.TabIndex = 3;

//

// TestControl

//

this.AutoScaleDimensions = new System.Drawing.SizeF(96F, 96F);

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

this.Controls.Add(this.tableLayoutPanel1);

this.Name = "TestControl";

this.Size = new System.Drawing.Size(562, 336);

this.tableLayoutPanel1.ResumeLayout(false);

this.tableLayoutPanel1.PerformLayout();

((System.ComponentModel.ISupportInitialize)(this.radLabel1)).EndInit();

((System.ComponentModel.ISupportInitialize)(this.radLabel2)).EndInit();

((System.ComponentModel.ISupportInitialize)(this.radTextBox1)).EndInit();

((System.ComponentModel.ISupportInitialize)(this.radTextBox2)).EndInit();

this.ResumeLayout(false);

}

#endregion

private System.Windows.Forms.TableLayoutPanel tableLayoutPanel1;

private Telerik.WinControls.UI.RadTextBox radTextBox2;

private Telerik.WinControls.UI.RadLabel radLabel1;

private Telerik.WinControls.UI.RadLabel radLabel2;

private Telerik.WinControls.UI.RadTextBox radTextBox1;

}

public partial class DpiTestForm : RadForm

{

public DpiTestForm()

{

InitializeComponent();

}

/// <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.tableLayoutPanel1 = new System.Windows.Forms.TableLayoutPanel();

this.radTextBox2 = new Telerik.WinControls.UI.RadTextBox();

this.radLabel1 = new Telerik.WinControls.UI.RadLabel();

this.radLabel2 = new Telerik.WinControls.UI.RadLabel();

this.radTextBox1 = new Telerik.WinControls.UI.RadTextBox();

this.testControl1 = new Standalone.DpiTest.TestControl();

this.tableLayoutPanel1.SuspendLayout();

((System.ComponentModel.ISupportInitialize)(this.radTextBox2)).BeginInit();

((System.ComponentModel.ISupportInitialize)(this.radLabel1)).BeginInit();

((System.ComponentModel.ISupportInitialize)(this.radLabel2)).BeginInit();

((System.ComponentModel.ISupportInitialize)(this.radTextBox1)).BeginInit();

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

this.SuspendLayout();

//

// tableLayoutPanel1

//

this.tableLayoutPanel1.ColumnCount = 2;

this.tableLayoutPanel1.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle());

this.tableLayoutPanel1.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 100F));

this.tableLayoutPanel1.Controls.Add(this.radTextBox2, 1, 1);

this.tableLayoutPanel1.Controls.Add(this.radLabel1, 0, 0);

this.tableLayoutPanel1.Controls.Add(this.radLabel2, 0, 1);

this.tableLayoutPanel1.Controls.Add(this.radTextBox1, 1, 0);

this.tableLayoutPanel1.Dock = System.Windows.Forms.DockStyle.Top;

this.tableLayoutPanel1.Location = new System.Drawing.Point(0, 0);

this.tableLayoutPanel1.Name = "tableLayoutPanel1";

this.tableLayoutPanel1.RowCount = 3;

this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle());

this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100F));

this.tableLayoutPanel1.Size = new System.Drawing.Size(292, 114);

this.tableLayoutPanel1.TabIndex = 1;

//

// radTextBox2

//

this

.radTextBox2.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Left | System.Windows.Forms.AnchorStyles.Right)));

this.radTextBox2.Font = new System.Drawing.Font("Segoe UI", 9.75F);

this.radTextBox2.Location = new System.Drawing.Point(73, 35);

this.radTextBox2.Margin = new System.Windows.Forms.Padding(4);

this.radTextBox2.Name = "radTextBox2";

this.radTextBox2.Size = new System.Drawing.Size(215, 23);

this.radTextBox2.TabIndex = 3;

//

// radLabel1

//

this.radLabel1.Font = new System.Drawing.Font("Segoe UI", 9.75F);

this.radLabel1.Location = new System.Drawing.Point(4, 4);

this.radLabel1.Margin = new System.Windows.Forms.Padding(4);

this.radLabel1.Name = "radLabel1";

this.radLabel1.Size = new System.Drawing.Size(49, 21);

this.radLabel1.TabIndex = 0;

this.radLabel1.Text = "Name: ";

//

// radLabel2

//

this.radLabel2.Font = new System.Drawing.Font("Segoe UI", 9.75F);

this.radLabel2.Location = new System.Drawing.Point(4, 35);

this.radLabel2.Margin = new System.Windows.Forms.Padding(4);

this.radLabel2.Name = "radLabel2";

this.radLabel2.Size = new System.Drawing.Size(61, 21);

this.radLabel2.TabIndex = 1;

this.radLabel2.Text = "Address: ";

//

// radTextBox1

//

this

.radTextBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Left | System.Windows.Forms.AnchorStyles.Right)));

this.radTextBox1.Font = new System.Drawing.Font("Segoe UI", 9.75F);

this.radTextBox1.Location = new System.Drawing.Point(73, 4);

this.radTextBox1.Margin = new System.Windows.Forms.Padding(4);

this.radTextBox1.Name = "radTextBox1";

this.radTextBox1.Size = new System.Drawing.Size(215, 23);

this.radTextBox1.TabIndex = 2;

//

// testControl1

//

this.testControl1.Dock = System.Windows.Forms.DockStyle.Fill;

this.testControl1.Location = new System.Drawing.Point(0, 114);

this.testControl1.Name = "testControl1";

this.testControl1.Size = new System.Drawing.Size(292, 156);

this.testControl1.TabIndex = 2;

//

// DpiTestForm

//

this.AutoScaleDimensions = new System.Drawing.SizeF(96F, 96F);

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

this.ClientSize = new System.Drawing.Size(292, 270);

this.Controls.Add(this.testControl1);

this.Controls.Add(this.tableLayoutPanel1);

this.Name = "DpiTestForm";

//

this.RootElement.ApplyShapeToControl = true;

this.Text = "DpiTestForm";

this.tableLayoutPanel1.ResumeLayout(false);

this.tableLayoutPanel1.PerformLayout();

((System.ComponentModel.ISupportInitialize)(this.radTextBox2)).EndInit();

((System.ComponentModel.ISupportInitialize)(this.radLabel1)).EndInit();

((System.ComponentModel.ISupportInitialize)(this.radLabel2)).EndInit();

((System.ComponentModel.ISupportInitialize)(this.radTextBox1)).EndInit();

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

this.ResumeLayout(false);

}

#endregion

private System.Windows.Forms.TableLayoutPanel tableLayoutPanel1;

private Telerik.WinControls.UI.RadTextBox radTextBox2;

private Telerik.WinControls.UI.RadLabel radLabel1;

private Telerik.WinControls.UI.RadLabel radLabel2;

private Telerik.WinControls.UI.RadTextBox radTextBox1;

private TestControl testControl1;

}

General Discussions

answered on 31 Oct 2018

0 answers

81 views

Focus on tab moving for Radcommadbardropdownlist

Hello,

How to apply the focus on tab moving for Radcommadbardropdownlist. please do the needful

CommandBar

asked on 31 Oct 2018