Questions on UI for WinForms Forum

2 answers

60 views

2011 Beta TreeView mouse event issue?

Hi

I have added a mouse button handler to a RadTreeView in the TreeView's Loaded function like so:

tv.AddHandler(RadTreeViewItem.MouseLeftButtonDownEvent, new MouseButtonEventHandler(this.radTreeView_MouseLeftButtonDown), true);

but when I set my project to use the 2011 Beta libs this event seems to be getting triggered twice for every click, but it is only triggered once in the previous libs.

Is this a new problem that has been introduced, or known / expected behaviour?

Thanks

General Discussions

answered on 04 Mar 2011

3 answers

129 views

Cell color duplicates

Hi,

I have a function that calculates the color based on value in a cell.
This works nicely, but when i scroll, the cell color duplicates and attaches to cells that should not have the color.

Please look at the sample code:

namespace RadControlsWinFormsApp3

{

partial class Form1

{

/// <summary>

/// Required designer variable.

/// </summary>

private System.ComponentModel.IContainer components;

/// <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.radGridView1 = new Telerik.WinControls.UI.RadGridView();

((System.ComponentModel.ISupportInitialize)(this.radGridView1)).BeginInit();

this.SuspendLayout();

//

// radGridView1

//

this.radGridView1.Dock = System.Windows.Forms.DockStyle.Fill;

this.radGridView1.Location = new System.Drawing.Point(0, 0);

this.radGridView1.Name = "radGridView1";

this.radGridView1.Size = new System.Drawing.Size(364, 395);

this.radGridView1.TabIndex = 0;

this.radGridView1.Text = "radGridView1";

//

// Form1

//

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

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

this.ClientSize = new System.Drawing.Size(364, 395);

this.Controls.Add(this.radGridView1);

this.Name = "Form1";

this.Text = "Form1";

((System.ComponentModel.ISupportInitialize)(this.radGridView1)).EndInit();

this.ResumeLayout(false);

}

#endregion

private Telerik.WinControls.UI.RadGridView radGridView1;

}

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using Telerik.WinControls.UI;

namespace RadControlsWinFormsApp3

{

public partial class Form1 : Form

{

List<RowHelper> rows = new List<RowHelper>();

colorhelper MyColors = new colorhelper();

public Form1()

{

InitializeComponent();

Telerik.WinControls.UI.GridViewDecimalColumn gridViewDecimalColumn1 = new Telerik.WinControls.UI.GridViewDecimalColumn();

Telerik.WinControls.UI.GridViewTextBoxColumn gridViewTextBoxColumn1 = new Telerik.WinControls.UI.GridViewTextBoxColumn();

Telerik.WinControls.UI.GridViewComboBoxColumn gridViewComboBoxColumn1 = new Telerik.WinControls.UI.GridViewComboBoxColumn();

Telerik.WinControls.UI.GridViewMultiComboBoxColumn gridViewComboBoxColumn2 = new Telerik.WinControls.UI.GridViewMultiComboBoxColumn();

rows.Add(new RowHelper(1, "Row1", 1, 200000));

rows.Add(new RowHelper(2, "Row2", 2, 400000));

rows.Add(new RowHelper(3, "Row3", 3, 600000));

rows.Add(new RowHelper(4, "Row4", 1, 1200000));

rows.Add(new RowHelper(5, "Row4", 1, 1800000));

rows.Add(new RowHelper(6, "Row4", 1, null));

rows.Add(new RowHelper(7, "Row4", 1, null));

rows.Add(new RowHelper(8, "Row4", 1, null));

rows.Add(new RowHelper(9, "Row4", 1, null));

rows.Add(new RowHelper(10, "Row4", 1, null));

rows.Add(new RowHelper(11, "Row4", 1, null));

rows.Add(new RowHelper(12, "Row4", 1, null));

rows.Add(new RowHelper(13, "Row4", 1, null));

rows.Add(new RowHelper(14, "Row4", 1, null));

rows.Add(new RowHelper(15, "Row4", 1, null));

rows.Add(new RowHelper(16, "Row4", 1, null));

rows.Add(new RowHelper(17, "Row4", 1, null));

rows.Add(new RowHelper(18, "Row4", 1, null));

rows.Add(new RowHelper(19, "Row4", 1, null));

rows.Add(new RowHelper(20, "Row4", 1, null));

rows.Add(new RowHelper(21, "Row4", 1, null));

rows.Add(new RowHelper(22, "Row4", 1, null));

rows.Add(new RowHelper(23, "Row4", 1, null));

rows.Add(new RowHelper(24, "Row4", 1, null));

rows.Add(new RowHelper(25, "Row4", 1, null));

List<helper> list = new List<helper>();

list.Add(new helper(1, "test1"));

list.Add(new helper(2, "test2"));

list.Add(new helper(3, "test3"));

List<multicolumnhelper> multicolumnlist = new List<multicolumnhelper>();

multicolumnlist.Add(new multicolumnhelper(1, "test1", "col2"));

multicolumnlist.Add(new multicolumnhelper(2, "test2", "col2"));

multicolumnlist.Add(new multicolumnhelper(3, "test3", "col2"));

gridViewComboBoxColumn1.DataSource = list;

gridViewComboBoxColumn1.DisplayMember = "Value";

gridViewComboBoxColumn1.ValueMember = "ID";

gridViewComboBoxColumn1.HeaderText = "Test";

gridViewComboBoxColumn1.Name = "test";

gridViewComboBoxColumn1.FieldName = "RowID";

gridViewTextBoxColumn1.Name = "rowtext";

gridViewTextBoxColumn1.HeaderText = "rowtext";

gridViewTextBoxColumn1.FieldName = "RowText";

gridViewComboBoxColumn2.DataSource = multicolumnlist;

gridViewComboBoxColumn2.DisplayMember = "Value";

gridViewComboBoxColumn2.ValueMember = "ID";

gridViewComboBoxColumn2.HeaderText = "Test";

gridViewComboBoxColumn2.Name = "test2";

gridViewComboBoxColumn2.FieldName = "RowID";

gridViewDecimalColumn1.Name = "ColorTest";

gridViewDecimalColumn1.HeaderText = "ColorTest";

gridViewDecimalColumn1.FieldName = "ColorTest";

radGridView1.Columns.AddRange(new

Telerik.WinControls.UI.GridViewDataColumn[] { gridViewComboBoxColumn1, gridViewTextBoxColumn1, gridViewComboBoxColumn2, gridViewDecimalColumn1 });

radGridView1.CellFormatting += new CellFormattingEventHandler(radGridView1_CellFormatting);

PopulateData();

this.radGridView1.CellEditorInitialized += new GridViewCellEventHandler(radGridView1_CellEditorInitialized);

}

void radGridView1_CellFormatting(object sender, CellFormattingEventArgs e)

{

if (e.Column.Name == "ColorTest")

{

if (e.CellElement.Value != null)

{

e.CellElement.DrawFill = true;

try

{

Color useColor = MyColors.GetColorForValue((int)e.CellElement.Value);

e.CellElement.BackColor = useColor;

e.CellElement.BackColor2 = useColor;

e.CellElement.BackColor3 = useColor;

e.CellElement.BackColor4 = useColor;

}

catch (Exception)

{

}

void radGridView1_CellEditorInitialized(object sender, GridViewCellEventArgs e)

{

if (e.ActiveEditor is RadMultiColumnComboBoxElement)

{

RadMultiColumnComboBoxElement editor = (RadMultiColumnComboBoxElement)e.ActiveEditor;

editor.DropDownWidth = 200;

editor.EditorControl.ShowColumnHeaders = false;

editor.EditorControl.Columns["ID"].IsVisible = false;

editor.EditorControl.ShowRowHeaderColumn = false;

}

private void PopulateData()

{

radGridView1.DataSource = rows;

}

public class colorhelper

{

public colors DefaultColor = null;

List<colors> myColors = new List<colors>();

public colorhelper()

{

myColors.Add(new colors(0, 300000, Color.Green, Color.Green));

myColors.Add(new colors(300000, 500000, Color.Green, Color.Yellow));

myColors.Add(new colors(500000, 1200000, Color.Yellow, Color.Red));

DefaultColor = myColors[2];

}

public Color GetColorForValue(decimal Value)

{

colors col = myColors.Find(c => c.From <= Value && c.To >= Value);

if (col == null) col = DefaultColor;

return col.GetColor(Value);

}

public class colors{

public colors(int from, int to, Color fromcolor, Color tocolor)

{

From = from;

To = to;

FromColor = fromcolor;

ToColor = tocolor;

}

public int From { get; set; }

public int To { get; set; }

public Color FromColor { get; set; }

public Color ToColor { get; set; }

public int size

{

get { return To - From; }

}

public int relativeValue(decimal value)

{

if (value > To)

return 0;

else

return To - (int)value;

}

public Color GetColor(decimal Value)

{

int rMax = FromColor.R;

int rMin = ToColor.R;

int gMax = FromColor.G;

int gMin = ToColor.G;

int bMax = FromColor.B;

int bMin = ToColor.B;

var rAverage = Math.Abs(rMin + (int)((rMax - rMin) * relativeValue(Value) / size));

var gAverage = Math.Abs(gMin + (int)((gMax - gMin) * relativeValue(Value) / size));

var bAverage = Math.Abs(bMin + (int)((bMax - bMin) * relativeValue(Value) / size));

return Color.FromArgb(rAverage, gAverage, bAverage);

}

public class helper

{

public helper(int id, string value)

{

ID = id;

Value = value;

}

public int ID { get; set; }

public string Value { get; set; }

}

public class multicolumnhelper

{

public multicolumnhelper(int id, string value, string value2)

{

ID = id;

Value = value;

Value2 = value2;

}

public int ID { get; set; }

public string Value { get; set; }

public string Value2 { get; set; }

}

public class RowHelper

{

public RowHelper(int id, string text, int id2, int? value)

{

RowID = id;

RowText = text;

RowID2 = id2;

ColorTest = value;

}

public int RowID { get; set; }

public string RowText { get; set; }

public int RowID2 { get; set; }

public int? ColorTest { get; set; }

}

GridView

answered on 04 Mar 2011

3 answers

136 views

csv export

Hi,
2 questions...

1. Is there a way of keeping the column visible but not appearing in the export?
2. How and what do innerelements do?

Thanks
Deepak

GridView

answered on 04 Mar 2011

1 answer

163 views

dont allow edit of textbox in a dropdownlist

Is there a way to make the textbox part of a dropdownlist readonly (so it works more like a html dropdown) ?

DropDownList

answered on 04 Mar 2011

1 answer

131 views

How to differentiate the context menus

Hi All,
I'm working on customizing certain menu items available on Filter ContextMenu. For that I'm handling ContextMenuOpening event.
This event is generated for all context menus like, Header context menu, Data row context menu and Filter row funnel-button context menu. I wanted to differentiate among these Context Menus and handle only Filter row funnel-button context menu.

Actually one thing I observed was on ContextMenuProvider. It varies like HeaderCellElement, DataCellElement and for funnel-button it is null. Is it a right object to differentiate the context menus or is there any other options available? Please help me out.

Thanks and Regards
ArunDhaJ

GridView

answered on 04 Mar 2011

2 answers

151 views

Self Referencing and Grouped GridView

Hi,

This is a two part question.

1) I'm using the self-referencing feature of the GridView. When the child rows of a parent displayed, they are aligned with the parent. How do I indent the children so I can emphasize the hierarchical relationship?

2)It also seems that when the GridView is both self-referencing and grouped, each row has two expanding buttons (one redundant). How do I make the expanding button invisible on the row header? I want to only show the button nested inside the cell.

Please see the attached screen shot.

Thanks for your help!
Josh

GridView

answered on 04 Mar 2011

1 answer

114 views

Is it possible to change the appointment view color in win form according to our requirement?

I have several categories and I want each category to be displayed in different color.

In the attached picture you can see some appointments retrieved from the database.

Each one is from deferent category so I want to differentiate using a color for each appointment.

Thanks a lot in advance

Scheduler and Reminder

answered on 04 Mar 2011

3 answers

141 views

Exporting radGridView

2 Questions:

1. How can a progress bar be implemented with any of the exporters?

2. When I use ExportToExcelML it always exports the file as a .xls instead of xml. Nowhere in my code is xls mentioned and I explicitly state it should be an xml file... what gives?

Thanks!

GridView

answered on 04 Mar 2011

1 answer

163 views

No Child in TreeView node

If there are no children in treeview node, then there must not by any plus sign. Why you show plus sign ? i dont understand. No children nodes cannot expand.

Thanks

Treeview

answered on 03 Mar 2011

5 answers

216 views

'Natural Sort' Question?

I have seen following explanation in the documentation for RadGrid:

"By default, clicking a third time returns to a natural sort (i.e. no sorting). No arrow is displayed on the column heading. Note: The property settings for the grid may disallow the natural sort."

My question is: What settings for the grid may disallow natural sort?

I am using Q1 2008 SP1 version , but I guess this question would apply in the same way to all versions.

Thanks
Sunil

GridView

answered on 03 Mar 2011