Questions on UI for WinForms Forum

5 answers

320 views

Hello
I have a question about focus on control TextBox, DropDownList etc.
How is the best solution for highlight control when got focus? Focus primitive, maybe some themes support this functionallity?

Please some example for solution.

Thanks so much.

General Discussions

answered on 15 Feb 2011

1 answer

542 views

[Solved] RadDropDownButton Get selected Item

Hi There,

I am using Rad Ribbon bar and have a dropdownbutton that I am dynamically creating the items for from a dataset. My problem is I can not seem to create an event handler for the selection as it appears that item.click does not seem to exist. here is my code:

For Each row As DataRow In ds_sn.Tables("sn_tbl_groups").Rows

Dim tag As New radmenuitem(row(1).ToString)

tag.CheckOnClick = New EventHandler(AddressOf GroupMenuclick)

Me.btn_SpecificGroup.Items.Add(tag)

Next

can some one point me to what event i should see in order to create the handler for this?

many thanks!

Jonathan

RibbonBar

answered on 15 Feb 2011

5 answers

278 views

[Solved] RadDock : Undockable center window

Hi , I try to use the 2009 Q2 RadDock control.

Is it possible to create a layout witch have all theses properties:

1. Have a unique center window or panel witch cannot be closed

2. Where the others docking windows won't dock on top / behind the center window but only around it.

3. the center window have no visible docking header.

Dock

answered on 15 Feb 2011

8 answers

362 views

Self reference and load on demand at Simple File Explorer

Hello,

I use:

Q3 2010 version 2010.3.10.1215
Windows 7, Visual Studio 2010, .net framework 4

I try to evaluate RadGridView but with simple file explorer (hierarchy, self reference, unbound mode, load on demand/expansion) and I get exceptions.

I isolate problems to simple file explorer. Cound You help me to solve these problems ?

1. Add rows in begin/end section after expanded event.

Is it necessary to add rows in statements begin/end ?

If I do it, I get exception

System.NullReferenceException was unhandled

Message=Object reference not set to an instance of an object.

Source=Telerik.WinControls

StackTrace:

at Telerik.WinControls.RadObject.RaisePropertyNotifications(RadPropertyValue propVal, Object oldValue, Object newValue, ValueSource oldSource)

at Telerik.WinControls.RadObject.SetValueCore(RadPropertyValue propVal, Object propModifier, Object newValue, ValueSource source)

at Telerik.WinControls.RadElement.SetValueCore(RadPropertyValue propVal, Object propModifier, Object newValue, ValueSource source)

at Telerik.WinControls.RadObject.OnTwoWayBoundPropertyChanged(PropertyBinding binding, Object newValue)

at Telerik.WinControls.PropertyBinding.UpdateSourceProperty(Object newValue)

at Telerik.WinControls.RadPropertyValue.SetLocalValue(Object value)

at Telerik.WinControls.RadObject.SetValueCore(RadPropertyValue propVal, Object propModifier, Object newValue, ValueSource source)

at Telerik.WinControls.RadElement.SetValueCore(RadPropertyValue propVal, Object propModifier, Object newValue, ValueSource source)

at Telerik.WinControls.UI.GridExpanderItem.set_Expanded(Boolean value)

at Telerik.WinControls.UI.GridExpanderItem.OnMouseUp(MouseEventArgs e)

at Telerik.WinControls.RadElement.OnCLREventsRise(RoutedEventArgs args)

at Telerik.WinControls.RadElement.OnBubbleEvent(RadElement sender, RoutedEventArgs args)

at Telerik.WinControls.RadItem.OnBubbleEvent(RadElement sender, RoutedEventArgs args)

at Telerik.WinControls.RadElement.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)

at Telerik.WinControls.RadItem.RaiseBubbleEvent(RadElement sender, RoutedEventArgs args)

at Telerik.WinControls.RadElement.RaiseRoutedEvent(RadElement sender, RoutedEventArgs args)

at Telerik.WinControls.RadElement.DoMouseUp(MouseEventArgs e)

at Telerik.WinControls.ComponentInputBehavior.OnMouseUp(MouseEventArgs e)

at Telerik.WinControls.RadControl.OnMouseUp(MouseEventArgs e)

at Telerik.WinControls.UI.RadGridView.OnMouseUp(MouseEventArgs e)

at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)

at System.Windows.Forms.Control.WndProc(Message& m)

at System.Windows.Forms.ScrollableControl.WndProc(Message& m)

at Telerik.WinControls.RadControl.WndProc(Message& m)

at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)

at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)

at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)

at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)

at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)

at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)

at System.Windows.Forms.Application.Run(Form mainForm)

at TelerikRadControlsWinFormsPrototype.Program.Main() in D:\rdawidziuk\src\OSS 12.2\Support\Prototypes\Technology\Presentation\TelerikRadControlsWinFormsPrototype\Program.cs:line 19

at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)

at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)

at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

at System.Threading.ThreadHelper.ThreadStart_Context(Object state)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.ThreadHelper.ThreadStart()

InnerException:

2. During keyboard manipulate:

enter - expand

selected cell chage with arrow keys

i get exception. It takes some time, but after minutes I always get this exception:

System.NullReferenceException was unhandled

Message=Object reference not set to an instance of an object.

Source=Telerik.WinControls.GridView

StackTrace:

at Telerik.WinControls.UI.GridTraverser.StepInHierarchyBackward()

at Telerik.WinControls.UI.GridTraverser.MovePreviousCore()

at Telerik.WinControls.UI.GridTraverser.MovePrevious()

at Telerik.WinControls.UI.BaseGridNavigator.MoveToNextRow(Int32 step, Boolean moveNextDirection)

at Telerik.WinControls.UI.BaseGridNavigator.SelectPreviousColumn()

at Telerik.WinControls.UI.GridRowBehavior.ProcessLeftKey(KeyEventArgs keys)

at Telerik.WinControls.UI.GridRowBehavior.ProcessKey(KeyEventArgs keys)

at Telerik.WinControls.UI.BaseGridBehavior.ProcessKey(KeyEventArgs keys)

at Telerik.WinControls.UI.BaseGridBehavior.ProcessKeyDown(KeyEventArgs keys)

at Telerik.WinControls.UI.RadGridView.OnKeyDown(KeyEventArgs e)

at System.Windows.Forms.Control.ProcessKeyEventArgs(Message& m)

at System.Windows.Forms.Control.ProcessKeyMessage(Message& m)

at System.Windows.Forms.Control.WndProc(Message& m)

at System.Windows.Forms.ScrollableControl.WndProc(Message& m)

at Telerik.WinControls.RadControl.WndProc(Message& m)

at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)

at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)

at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)

at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)

at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)

at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)

at System.Windows.Forms.Application.Run(Form mainForm)

at TelerikRadControlsWinFormsPrototype.Program.Main() in D:\rdawidziuk\src\OSS 12.2\Support\Prototypes\Technology\Presentation\TelerikRadControlsWinFormsPrototype\Program.cs:line 19

at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)

at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)

at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

at System.Threading.ThreadHelper.ThreadStart_Context(Object state)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.ThreadHelper.ThreadStart()

InnerException:

3. After column order change I get strange look columnorderchange.png

My file explorer code:

using System;

using System.Collections.Generic;

using System.Drawing;

using System.Windows.Forms;

using Telerik.WinControls;

using Telerik.WinControls.UI;

using System.IO;

namespace TelerikRadControlsWinFormsPrototype

{

public partial class MyFileSystemExplorer : Telerik.WinControls.UI.RadForm

{

private int idCounter = 0;

public MyFileSystemExplorer()

{

InitializeComponent();

}

private void Form1_Load(object sender, EventArgs e)

{

// grid initialize

this.radGridView1.CellFormatting += new CellFormattingEventHandler(radGridView1_CellFormatting);

this.radGridView1.ChildViewExpanded += new ChildViewExpandedEventHandler(radGridView1_ChildViewExpanded);

this.radGridView1.Relations.AddSelfReference(this.radGridView1.MasterTemplate, "ID", "ParentID");

this.radGridView1.ImageList = this.imageList1;

this.radGridView1.TableElement.RowHeight = 35;

// colums

GridViewDataColumn idCol = new GridViewDecimalColumn();

idCol.DataType = typeof(int);

idCol.Name = "ID";

idCol.ReadOnly = true;

idCol.IsVisible = false;

this.radGridView1.Columns.Add(idCol);

GridViewDataColumn parentIdCol = new GridViewDecimalColumn();

parentIdCol.DataType = typeof(int);

parentIdCol.Name = "ParentID";

parentIdCol.ReadOnly = true;

parentIdCol.IsVisible = false;

this.radGridView1.Columns.Add(parentIdCol);

GridViewDataColumn nameCol = new GridViewTextBoxColumn();

nameCol.DataType = typeof(string);

nameCol.Name = "Name";

nameCol.HeaderText = "Name";

nameCol.ReadOnly = true;

this.radGridView1.Columns.Add(nameCol);

GridViewDataColumn modiffCol = new GridViewTextBoxColumn();

modiffCol.DataType = typeof(DateTime);

modiffCol.Name = "Creation";

modiffCol.HeaderText = "Creation";

modiffCol.ReadOnly = true;

this.radGridView1.Columns.Add(modiffCol);

// root rows

List<FileSystemInfoWrp> drivesInfo = new List<FileSystemInfoWrp>();

foreach (DriveInfo di in DriveInfo.GetDrives())

{

drivesInfo.Add(new FileSystemInfoWrp(this.idCounter++, di.RootDirectory));

}

this.Add(null, drivesInfo.ToArray());

}

void radGridView1_ChildViewExpanded(object sender, ChildViewExpandedEventArgs e)

{

if (e.IsExpanded)

{

FileSystemInfoWrp parent = (FileSystemInfoWrp)e.ParentRow.Tag;

// adding in begin/end update section invokes NullReferenceException, why ?

//this.radGridView1.BeginUpdate();

try

{

this.Add(parent, this.GetFileSystemElements(parent));

}

finally

{

//this.radGridView1.EndUpdate();

}

this.radGridView1.GridNavigator.SelectRow(e.ParentRow);

}

else

{

// remove child nodes, always read files from hdd

foreach(GridViewRowInfo gvri in e.ParentRow.ChildRows)

{

this.radGridView1.Rows.Remove(gvri);

}

void radGridView1_CellFormatting(object sender, CellFormattingEventArgs e)

{

GridDataCellElement cell = e.CellElement as GridDataCellElement;

if (cell != null && cell.ExpanderItem != null)

{

cell.ImageAlignment = ContentAlignment.MiddleLeft;

cell.ExpanderItem.Alignment = ContentAlignment.MiddleLeft;

if (((FileSystemInfoWrp)e.Row.Tag).ElementInfo is DirectoryInfo)

{

if (e.Row.IsExpanded)

{

cell.Image = this.imageList1.Images[1];

}

else

cell.Image = this.imageList1.Images[0];

cell.ExpanderItem.Visibility = ElementVisibility.Visible;

}

else

{

cell.Image = this.imageList1.Images[2];

cell.ExpanderItem.Visibility = ElementVisibility.Hidden;

}

cell.TextImageRelation = TextImageRelation.ImageBeforeText;

}

private FileSystemInfoWrp[] GetFileSystemElements(FileSystemInfoWrp root)

{

List<FileSystemInfoWrp> result = new List<FileSystemInfoWrp>();

if (root.ElementInfo is DirectoryInfo)

{

try

{

FileSystemInfo[] infos = ((DirectoryInfo)root.ElementInfo).GetFileSystemInfos();

foreach (FileSystemInfo fi in infos)

{

result.Add(new FileSystemInfoWrp(this.idCounter++, fi));

}

catch // omits io exception

{

}

return result.ToArray();

}

private void Add(FileSystemInfoWrp parent, FileSystemInfoWrp[] fileInfos)

{

foreach (FileSystemInfoWrp fsiw in fileInfos)

{

GridViewRowInfo row = this.radGridView1.Rows.AddNew();

row.Cells["ID"].Value = fsiw.Id;

if (parent != null)

row.Cells["ParentID"].Value = parent.Id;

row.Cells["Name"].Value = fsiw.ElementInfo.Name;

row.Cells["Creation"].Value = fsiw.ElementInfo.CreationTime;

row.Tag = fsiw;

}

public class FileSystemInfoWrp

{

public int Id { get; set; }

public FileSystemInfo ElementInfo { get; set; }

public FileSystemInfoWrp(int id, FileSystemInfo elementInfo)

{

this.Id = id;

this.ElementInfo = elementInfo;

}

designer:

using TelerikRadControlsWinFormsPrototype.Properties;

namespace TelerikRadControlsWinFormsPrototype

{

partial class MyFileSystemExplorer

{

/// <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.components = new System.ComponentModel.Container();

System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(MyFileSystemExplorer));

this.radGridView1 = new Telerik.WinControls.UI.RadGridView();

this.imageList1 = new System.Windows.Forms.ImageList(this.components);

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

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

this.SuspendLayout();

//

// radGridView1

//

this.radGridView1.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(248)))), ((int)(((byte)(248)))), ((int)(((byte)(248)))));

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

this.radGridView1.ForeColor = System.Drawing.Color.Black;

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

//

// radGridView1

//

this.radGridView1.MasterTemplate.AllowColumnChooser = false;

this.radGridView1.MasterTemplate.AutoGenerateColumns = false;

this.radGridView1.MasterTemplate.AutoSizeColumnsMode = Telerik.WinControls.UI.GridViewAutoSizeColumnsMode.Fill;

this.radGridView1.MasterTemplate.Caption = null;

this.radGridView1.MasterTemplate.MultiSelect = true;

this.radGridView1.MasterTemplate.ShowGroupedColumns = true;

this.radGridView1.Name = "radGridView1";

//

this.radGridView1.RootElement.ForeColor = System.Drawing.Color.Black;

this.radGridView1.Size = new System.Drawing.Size(1216, 786);

this.radGridView1.TabIndex = 2;

this.radGridView1.Text = "radGridView1";

this.radGridView1.ThemeName = "Telerik";

//

// imageList1

//

this.imageList1.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("imageList1.ImageStream")));

this.imageList1.TransparentColor = System.Drawing.Color.Transparent;

this.imageList1.Images.SetKeyName(0, "folder_blue_open1.png");

this.imageList1.Images.SetKeyName(1, "folder1.png");

this.imageList1.Images.SetKeyName(2, "new1.png");

//

// MyFileSystemExplorer

//

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

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

this.ClientSize = new System.Drawing.Size(1216, 786);

this.Controls.Add(this.radGridView1);

this.Name = "MyFileSystemExplorer";

//

this.RootElement.ApplyShapeToControl = true;

this.Text = "My File System Explorer";

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

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

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

this.ResumeLayout(false);

}

#endregion

private Telerik.WinControls.UI.RadGridView radGridView1;

private System.Windows.Forms.ImageList imageList1;

}

Cound You help me to solve these problems ?

Regards,
Robert

GridView

answered on 15 Feb 2011

9 answers

256 views

Listview for VB.NET

hi

Do you have list view for vb.net winforms?

Thanks
Raj

General Discussions

answered on 15 Feb 2011

3 answers

209 views

[Solved] Catching Appointments Deletion

I guys,

I need to react to Appointment changes in the scheduler. In order to do so, I subscribed to the CollectionChanged event declared by the Appointments collection in the scheduler :

radScheduler1.Appointments.CollectionChanged += new NotifyCollectionChangedEventHandler(Appointments_CollectionChanged);

I have no problem on Add and ItemChanged actions, but I can't find the Appointment object in the e.OldItems collection on Remove action. I just keep on getting a null reference exception :

public event ControlAddInEventHandler OnAppointmentsCollectionChanged;

void Appointments_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)

{

try

{

if (OnAppointmentsCollectionChanged != null) {

switch (e.Action) {

case NotifyCollectionChangedAction.Add:

foreach (Appointment ap in e.NewItems)

{

OnAppointmentsCollectionChanged(1, ap.Subject);

}

break;

case NotifyCollectionChangedAction.ItemChanged:

case NotifyCollectionChangedAction.Remove:

foreach (Appointment ap in e.OldItems)

{

OnAppointmentsCollectionChanged(2, ap.Subject);

}

break;

default: break;

}

catch (Exception ex)

{

OnAppointmentsCollectionChanged(3, ex.Message);

}

Thank you for your help :)

Scheduler and Reminder

answered on 15 Feb 2011

4 answers

188 views

Howto customize the summary group onm RadGridView

Hy everyone

I have already ask this. but my post was lost.

The telerik forum has a problem with the server, the message was.

"It seems there was a problem with our server. Try reloading the page."

So i put again this post , I hope this time it don´t vanish.

I want to customize a summary group on the radgridview, I have this.

---Group 1 Total A

-------Group 2 Total B

------------------Group 3 Total C

------------------Group 4 Total D

I don´t want to display the total B only Total C and Total D and Total A must be (Total C + Total D).

How can achieve this.

Thanks in advance.

jolynice

GridView

answered on 15 Feb 2011

3 answers

301 views

Save and loadlayout xml manipluation

Hi

I want to use xml from savelayout and loadlayout.

but i want some specific properties from xml. i.e. i want to save some specific properties of xmlnode.

for eg.

StringBuilder stbTmp = new StringBuilder();
            using (XmlWriter writer = XmlWriter.Create(stbTmp))
            {
                rgvCustom.SaveLayout(writer);
            }

Generated Output:
<Telerik.WinControls.UI.GridViewDecimalColumn FormatString="" Width="92" FieldName="h_company_id" Name="h_company_id" IsAutoGenerated="True" IsVisible="True" HeaderText="h_company_id" TextAlignment="MiddleRight" />

I want to following string.
Expected Output
<Telerik.WinControls.UI.GridViewDecimalColumn FormatString="" FieldName="company_id" Name="company_id" HeaderText="company id" TextAlignment="MiddleRight" />

how can get above string in savelayout except........ IsAutoGenerated="True" IsVisible="True"

Please let me know.

thanks.

GridView

answered on 14 Feb 2011

6 answers

554 views

[Solved] Collapsible Panel Control from Demo

Hi all,

Just purchased and downloaded the Premium Telerik collection (was going to just buy Telerik Reporting, but hey thought I'd spring for the whole shebang) and I'm running through the demo and was wondering if there is a control like the one I'm attaching as a pic, the collapsible panel that pops in/out by clicking on the arrow icon.

I've done this before with standard windows panels but I'm really hoping this is a property of the radpanel or possible another control.

Thanks all!

General Discussions

answered on 14 Feb 2011

1 answer

145 views

[Solved] Formatting the Grid at Cell Level

I have a requirement to generate a Dynamic Grid with Decimal Column. Some cells in the grid has to be displayed with a dollar($) symbol and some cells in particular row should be displayed with percentage (%). Could you pls. provide some help to achieve this.

GridView

answered on 14 Feb 2011