Questions on UI for WinForms Forum

2 answers

156 views

Hi Telerik,

This isn't a question (unless you see ways to improve the class). Just giving a little back for all the help you guys have passed my way in the last year.

The class below allows a button to be placed in the Group Header cells of a grouped GridView and be able to subscribe to the button's clickevent. The event args pass back the GridViewGroupRowInfo. I'm using it to be able to identify and manipulate only the data rows associated with the particular group in question.

Hope some finds it useful
Regards
Ian

{

public delegate void GroupHeaderCellButtonClickEventHandler(object sender, GroupHeaderButtonClickEventArgs e);

public partial class CustomGridView : RadGridView

{

public event GroupHeaderCellButtonClickEventHandler GroupHeaderCellButtonClick;

public CustomGridView()

{

InitializeComponent();

base.CreateCell += new GridViewCreateCellEventHandler(CustomGridView_CreateCell);

}

void CustomGridView_CreateCell(object sender, GridViewCreateCellEventArgs e)

{

if (e.CellType == typeof(GridGroupContentCellElement) && e.Row.GetType() == typeof(GridGroupHeaderRowElement))

{

e.CellElement = new RadCustomGroupContentCell(e.Column, e.Row);

RadCustomGroupContentCell cellElement = (RadCustomGroupContentCell)e.CellElement;

cellElement.InternalGroupHeaderCellButtonClick+=new GroupHeaderCellButtonClickEventHandler(cellElement_InternalGroupHeaderCellButtonClick);

}

void cellElement_InternalGroupHeaderCellButtonClick(object sender, GroupHeaderButtonClickEventArgs e)

{

if (GroupHeaderCellButtonClick != null)

{

GroupHeaderCellButtonClick(sender, e);

}

public override string ThemeClassName

{

get

{

return typeof(RadGridView).FullName;

}

set

{ }

}

protected internal class RadCustomGroupContentCell : GridGroupContentCellElement

{

public event GroupHeaderCellButtonClickEventHandler InternalGroupHeaderCellButtonClick;

RadButtonElement theButton;

public RadCustomGroupContentCell(GridViewColumn column, GridRowElement row)

: base(column, row)

{

}

protected override void DisposeManagedResources()

{

theButton.Click -= new EventHandler(theButton_Click);

base.DisposeManagedResources();

}

void theButton_Click(object sender, EventArgs e)

{

InternalGroupHeaderCellButtonClick(sender, new GroupHeaderButtonClickEventArgs((GridViewGroupRowInfo)this.RowInfo));

}

protected override void CreateChildElements()

{

base.CreateChildElements();

theButton = new RadButtonElement();

theButton.Click += new EventHandler(theButton_Click);

theButton.Text = "Insert";

theButton.TextImageRelation = System.Windows.Forms.TextImageRelation.ImageBeforeText;

theButton.Image = Resources.InsertRow16;

this.Children.Add(theButton);

}

protected override SizeF ArrangeOverride(SizeF finalSize)

{

SizeF size = base.ArrangeOverride(finalSize);

float buttonX =2;

float buttonY = 4;

RectangleF buttonRectangle = new RectangleF(buttonX, buttonY, theButton.DesiredSize.Width + 4, theButton.DesiredSize.Height + 2);

theButton.Arrange(buttonRectangle);

float buttonAndTextX = theButton.DesiredSize.Width + 4;

RectangleF clientRect = new RectangleF(buttonAndTextX + buttonX, 0, finalSize.Width - buttonAndTextX - buttonX, finalSize.Height + 4);

this.layoutManagerPart.Arrange(clientRect);

return size;

}

protected override Type ThemeEffectiveType

{

get

{

return typeof(GridGroupContentCellElement);

}

set

{ }

}

The Event args look like this although more could be added as needed I imagine

public class GroupHeaderButtonClickEventArgs:EventArgs

{

public GridViewGroupRowInfo GroupRowInfo

{ get; set; }

public GroupHeaderButtonClickEventArgs(GridViewGroupRowInfo groupRowInfo)

{

this.GroupRowInfo = groupRowInfo;

}

GridView

answered on 18 Oct 2011

3 answers

203 views

Autoselect value with tab key

The MultiColumnComboBox currently selects the correct value in the popup when using the ENTER key. I want to achieve the same behavior with the TAB key but I haven't succeeded.

Also, if the user's text is not associated to any of the items, I want to empty the textbox so that he sees that's not a valid option.

Thanks!

Sample code :

using System.Collections.Generic;

using System.Windows.Forms;

using Telerik.WinControls;

using Telerik.WinControls.Data;

using Telerik.WinControls.UI;

namespace MultiColumnComboAutoSelectWithTab

{

public class RandomObject

{

public int Id { get; set; }

public string FirstStuff { get; set; }

public string SecondStuff { get; set; }

public RandomObject(int id, string first, string second)

{

this.Id = id;

this.FirstStuff = first;

this.SecondStuff = second;

}

public class Form1 : Form

{

public Form1()

{

InitializeComponent();

InitializeCustomComponent();

var lst = new List<RandomObject>();

lst.Add(new RandomObject(1, "Albert", "Stuff"));

lst.Add(new RandomObject(2, "Alphonse", "Stuff"));

this.radMultiColumnComboBox1.DataSource = lst;

}

private void InitializeCustomComponent()

{

this.radMultiColumnComboBox1.DisplayMember = "FirstStuff";

this.radMultiColumnComboBox1.ValueMember = "Id";

this.radMultiColumnComboBox1.EditorControl.Columns.Add(new GridViewTextBoxColumn("Id", "Id"));

this.radMultiColumnComboBox1.EditorControl.Columns["Id"].IsVisible = false;

this.radMultiColumnComboBox1.EditorControl.Columns.Add(new GridViewTextBoxColumn("FirstStuff", "FirstStuff"));

this.radMultiColumnComboBox1.EditorControl.Columns["FirstStuff"].HeaderText = "First stuff";

this.radMultiColumnComboBox1.EditorControl.Columns.Add(new GridViewTextBoxColumn("SecondStuff", "SecondStuff"));

this.radMultiColumnComboBox1.EditorControl.Columns["SecondStuff"].HeaderText = "SecondStuff";

this.radMultiColumnComboBox1.AutoFilter = true;

this.radMultiColumnComboBox1.DropDownStyle = RadDropDownStyle.DropDown;

this.radMultiColumnComboBox1.AutoSize = true;

this.radMultiColumnComboBox1.AutoSizeDropDownToBestFit = true;

var filter = new FilterDescriptor(this.radMultiColumnComboBox1.DisplayMember, FilterOperator.StartsWith, string.Empty);

this.radMultiColumnComboBox1.EditorControl.MasterTemplate.FilterDescriptors.Add(filter);

}

/// <summary>

/// Variable nécessaire au concepteur.

/// </summary>

private System.ComponentModel.IContainer components = null;

/// <summary>

/// Nettoyage des ressources utilisées.

/// </summary>

/// <param name="disposing">true si les ressources managées doivent être supprimées ; sinon, false.</param>

protected override void Dispose(bool disposing)

{

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

{

components.Dispose();

}

base.Dispose(disposing);

}

#region AutoGeneratedStuff

private void InitializeComponent()

{

this.radMultiColumnComboBox1 = new Telerik.WinControls.UI.RadMultiColumnComboBox();

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

((System.ComponentModel.ISupportInitialize)(this.radMultiColumnComboBox1)).BeginInit();

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

this.SuspendLayout();

//

// radMultiColumnComboBox1

//

// radMultiColumnComboBox1.NestedRadGridView

//

this.radMultiColumnComboBox1.EditorControl.BackColor = System.Drawing.SystemColors.Window;

this.radMultiColumnComboBox1.EditorControl.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));

this.radMultiColumnComboBox1.EditorControl.ForeColor = System.Drawing.SystemColors.ControlText;

this.radMultiColumnComboBox1.EditorControl.Location = new System.Drawing.Point(0, 0);

//

this.radMultiColumnComboBox1.EditorControl.MasterTemplate.AllowAddNewRow = false;

this.radMultiColumnComboBox1.EditorControl.MasterTemplate.AllowCellContextMenu = false;

this.radMultiColumnComboBox1.EditorControl.MasterTemplate.AllowColumnChooser = false;

this.radMultiColumnComboBox1.EditorControl.MasterTemplate.EnableGrouping = false;

this.radMultiColumnComboBox1.EditorControl.MasterTemplate.ShowFilteringRow = false;

this.radMultiColumnComboBox1.EditorControl.Name = "NestedRadGridView";

this.radMultiColumnComboBox1.EditorControl.ReadOnly = true;

this.radMultiColumnComboBox1.EditorControl.ShowGroupPanel = false;

this.radMultiColumnComboBox1.EditorControl.Size = new System.Drawing.Size(240, 150);

this.radMultiColumnComboBox1.EditorControl.TabIndex = 0;

this.radMultiColumnComboBox1.Location = new System.Drawing.Point(81, 78);

this.radMultiColumnComboBox1.Name = "radMultiColumnComboBox1";

//

this.radMultiColumnComboBox1.RootElement.AutoSizeMode = Telerik.WinControls.RadAutoSizeMode.WrapAroundChildren;

this.radMultiColumnComboBox1.Size = new System.Drawing.Size(369, 20);

this.radMultiColumnComboBox1.TabIndex = 0;

this.radMultiColumnComboBox1.TabStop = false;

this.radMultiColumnComboBox1.Text = "radMultiColumnComboBox1";

//

// radTextBox1

//

this.radTextBox1.Location = new System.Drawing.Point(81, 131);

this.radTextBox1.Name = "radTextBox1";

this.radTextBox1.Size = new System.Drawing.Size(330, 20);

this.radTextBox1.TabIndex = 1;

this.radTextBox1.TabStop = false;

this.radTextBox1.Text = "radTextBox1";

//

// Form1

//

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

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

this.ClientSize = new System.Drawing.Size(498, 266);

this.Controls.Add(this.radTextBox1);

this.Controls.Add(this.radMultiColumnComboBox1);

this.Name = "Form1";

this.Text = "Form1";

((System.ComponentModel.ISupportInitialize)(this.radMultiColumnComboBox1)).EndInit();

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

this.ResumeLayout(false);

this.PerformLayout();

}

#endregion

private Telerik.WinControls.UI.RadMultiColumnComboBox radMultiColumnComboBox1;

private Telerik.WinControls.UI.RadTextBox radTextBox1;

}

MultiColumn ComboBox

answered on 18 Oct 2011

11 answers

790 views

Export To Excel Including Child Templates

hi,

I have Implemented Export to Excel for A RadGridView Content. It is working.
But the problem here is, I have child templetes also in my application.

Can you please tell me how to export The RadGridView content including Child templates
Or is there any property to be assigned.

Thank you.

regards,
Mahitha Madala.

GridView

answered on 17 Oct 2011

7 answers

238 views

GridViewMultiComboBoxColumn implementation issues

Hi there,

I'd really like to make use of the GridViewMultiComboBoxColumn but I'm finding a few problems.

I have the DataSource property of the column bound to a collection of business objects. That object has all sorts of properties and I really only want to show 2 of them.

I don't see any examples of the GridViewMultiComboBoxColumn in the shipping source code (Q3 2009 SP1) however I did find a couple of posts (here and here) of others trying to do something similar and it appears I need to customize the displayed Grid in the CellBeginEdit event.

A funny implementation detail of this is that since that event gets called everytime the user clicks on a row, I now need to add some class variable to determine if I've customized the grid otherwise the columns I add programmatically get added over and over... overlooking that for the moment here's my questions.

Question 1: My first issue is that when I click on the cell with the GridViewMultiComboBoxColumn, it suddenly shows me a Type name 'Telerik.WinControls.UI.GridViewDataRowInfo' instead of the DisplayMember. Here's a screenshot.

Question 1.1: As a side note, why must a click twice in the cell to get the drop down to display?

Question 2: My second issue is that when it displays the Grid, even though I've told it to only display 2 columns, it still makes space for all the properties. Why is this? It doesn't seem to matter if I call BestFitColumns(). Here's a screenshot.

I've uploaded my source code here for you to see.

GridView

answered on 17 Oct 2011

2 answers

137 views

Highlight node based on raddock document selection

Hi Telerik

I'm trying to create a standout highlight in a treeview to indicate which document in a raddock has been selected. I have created a Custom document with a DocumentNode property which points to the node in the tree which relates to the document. I'm using the Active document changed event and a TreeViewElement.Update to attempt this. THe code works for the addition of a single document but gets stuck on the next added document and won't reformat the appropriate node when I change from one document to the other by clicking on the document window tab.

The key code snippets are below:
In Active Document changed

tvMPWorkspace.TreeViewElement.Update(RadTreeViewElement.UpdateActions.StateChanged);

In Node Formatting event

if (rDockModelPackage.DocumentManager.ActiveDocument != null && ((RadCustomDocumentWindow)rDockModelPackage.DocumentManager.ActiveDocument).DocumentNode == e.Node)

{

e.NodeElement.BackColor = Color.PaleGoldenrod;

}

else

{

e.NodeElement.ResetValue(LightVisualElement.BackColorProperty, Telerik.WinControls.ValueResetFlags.Local);

}

As usual, all help gratefully received
Regards
Ian

Treeview

answered on 17 Oct 2011

2 answers

124 views

drag & drop on ribbon

Hi
When i am droping an object from another control to ribbon, how do u know.. where did i drop my object, i mean.. on which button/gallery and what is that name and all

i have tried like this
Point pt = new Point(e.X, e.Y);
if ((rbMosaique.GetChildAtPoint(pt) != null) &&
(rbM.GetChildAtPoint(pt).GetType() == typeof(Telerik.WinControls.UI.RadGalleryItem))

but it is always showing null

pelase help me

Advance thanks

Regards
Hema

RibbonBar

answered on 17 Oct 2011

9 answers

246 views

2011 Q2 Treeview - Drag Drop not working?

Is there something broken about dragdrop in Q2 treeview?
I have a treeview where I have enabled 'AllowDragDrop' and 'AllowDrop'. However, the 'ItemDrag', 'DragStarted' and 'DragStarting' events aren't firing all all.

Is there something I'm doing wrong? The documentation makes it look easy!
I'm basically wanting to detect when a node from the first treeview is dragged into the second treeview.

Thanks,
Richard.

Treeview

answered on 17 Oct 2011

1 answer

226 views

Add image to a column and make column text a link

Hi,

I am using RadListView in DetailView type and have 4 columns. I would like to display an image before the text in the 3rd column depending on the data in that column. The column holds a file name i.e myFile.pdf and I would like to make that a link that is clickable how do I do that?

I know this is twp questions into one but I really need a quick response and the Issue tracker site is not working at the moment

Thanks
H

ListView

answered on 17 Oct 2011

8 answers

160 views

summarize Column Headers

Hello,
I want "four column headings" Merge to "1" header line.
is that possible?

GridView

answered on 17 Oct 2011

2 answers

221 views

Clear Filters button in Filter Row

I want to have a button in the filter row for cancelling all active filters.
Just like the Clear filters button in http://demos.telerik.com/aspnet-ajax/grid/examples/programming/filtertemplate/defaultcs.aspx

Is this possible in winforms?

GridView

answered on 15 Oct 2011