Questions on UI for WinForms Forum

18,796 questions

1 answer

125 views

Contents of PanelBar in ExplorerBarStyle don't resize properly

Hi,

The contents of the panelBar in ExplorerBarStyle do not resize, if a scrollbar is visible. The vertical scrollbar stays at the current location until one of the contained groups is collapsed or expanded.

Steps to reproduce the problem:

1. Create a new form and add a Panelbar with DockStyle.Fill and set the GroupStyle to ExplorerBarStyle
2. Add a few groups to the Panelbar and set the EnableHostControlMode to true
3. Make sure the CanScroll Property of the Panelbar ist set to true
4. Start the Application
5. Resize the window so that the vertical scrollbar is displayed
6. Drag the right border of the window and resize it (now the scrollbars should be at the location they were before the resizing)
7. Click one of the groups to place the scrollbars in the correct location

Is this behaviour a bug or am I missing something really simple? What do I have to do to always place the Scrollbars at the right border of the window?

My System:

OS: Windows 7 64bit
Framework: Version 2 0

Edit: Sorry, wrong forum. I've posted it in the Panelbar forum.

Panel

answered on 15 Feb 2010

1 answer

105 views

Contents of PanelBar in ExplorerBarStyle don't resize properly

OS: Windows 7 64bit
Framework: Version 2 0
Telerik RADControls for WinForms: Q3 2009 SP1 (2009.3.9.1203)

Panelbar (obsolete as of Q2 2010)

answered on 15 Feb 2010

8 answers

442 views

RadCheckBoxElement does not show difference when tristate and set to ToggleState.Indeterminate

Hello Telerik team.

NOTE: this issue appies to RadCheckBox (and derived/related) in general.

I've noticed that when using a RadCheckBox in either a winform or a as RadCheckBoxkElement (as custom cell edit control in a grid cell) it shows a checkmark when it is set the value Indeterminate.

This occurs as well as for invokation by the user as well as programatically.

MS's checkbox has a nice square to indicate that the value of the checkbox is indeterminate. So Telerik showing a checkmark for both checked and indeterminate is quite confusing to a user.

On a usercontrol / winform the workaround is simple: Just use the MS checkbox instead.
However, as a RadCheckBoxElement in a gridview, there is no workaround for this....??????:

Please let me know how I can use the RadCheckBoxElement in the radgridview cell and see the differnce between Checked, Unchecked and Indeterminate visually.

Kind regards,

Jack

GridView

answered on 15 Feb 2010

1 answer

225 views

Grid View Conditional Column Merge

Hi Experts,

I want a solution regarding telerik gridview.

I have one Master Grid and one Child Grid view. And i Want a Conditional Column Merging in Child Grid View Template according to the value in one cell.

I have Attached two screen shots for it. 1 Named "Current - Output" is Current Output and 2nd one named "Expected - Output" is Expected Output.

Waiting for the Positive Response.

Thank You,

Jignesh Patel.

GridView

answered on 15 Feb 2010

2 answers

278 views

TreeView_DragDrop event not working.

I have control inherited from RadTreeView.

In my constructor i have set

AllowDragDrop =

true;

void

TreeView_ItemDrag(object sender, RadTreeViewEventArgs e)

{

//Does nothing

}

void

TreeView_DragEnter(object sender, DragEventArgs e)

{

e.Effect =

DragDropEffects.Move;

}

void

TreeView_DragDrop(object sender, DragEventArgs e)
{
//My business logic....
}

TreeView_DragDrop even is never get executed when i drop a RadTreeNode before/after another RadTreeNode in the view.

Please help...

Treeview

answered on 15 Feb 2010

1 answer

145 views

RadGridView empty rows

Hi..
I have RadGridView that takes input from user on runtime. when user clicks new row, instead of completing the first, he must be restrained to enter in new row, I am able to prompt the user to complete the input in first row, but second row is created on clicking on it. I have used Janus Grid before, it has event 'e.cancel = true' option in RowsAdded event. but no such thing in RadGridView. Any solution to restrain empty rows being entered by user..Please Help...?????

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 15 Feb 2010

3 answers

118 views

DemoApp Left hand control

What is the control used for the left hand menu in the Run Demo main application?

General Discussions

answered on 15 Feb 2010

2 answers

201 views

Expand and collapse ('-' and '+') is not shown

I have created a control derived from Telerik.WinControls.UI.RadTreeView (Latest trial version)

I am also creating the RadTreeNode on fly..

I am setting below properties at runtime.

groupTreeView.AllowArbitaryItemHeight =

true;

groupTreeView.AllowPlusMinusAnimation =

true;

groupTreeView.DropFeedbackColor =

Color.Black;

groupTreeView.Enabled =

true;

groupTreeView.ExpandAnimation =

ExpandAnimation.Opacity;

groupTreeView.Focusable =

true;

groupTreeView.PlusMinusAnimationStep = 10;

groupTreeView.ShowExpandCollapse =

true;

groupTreeView.ToggleMode =

ToggleMode.SingleClick;

groupTreeView.UseNewLayoutSystem =

true;

but this does not show me the Expand(+) and collapse(-) sign.

Note my TreeViewXML..
<?xml version="1.0" encoding="utf-16"?>
<TreeView xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" UseDefaultSelection="true" AllowDragDrop="true" AllowPlusMinusAnimation="true" ThemeName="Office2007Black" AllowDrop="true" BackColor="Window" DropFeedbackColor="Red" LineColor="ActiveCaption">
</TreeView>
Please help..

Treeview

answered on 12 Feb 2010

1 answer

134 views

SelectedNodeChanged not deselecting node

I use RadControls for WinForms Q3 2009 SP1.

In order to add a node to an existing node I need to know what the last selected node was, and SelectedNodeChanged works perfectly for this.

The problem is when I want to add a node to the root of the TreeView, I click on the TreeView itself (not on a node) and SelectedNodeChanged is *not* fired with RadTreeViewEventArgs.Node = null. Any idea how I can get around this?

Thanks

Ralph

Treeview

answered on 12 Feb 2010

1 answer

146 views

RadGridView and use of "Equals" plus CellFormatting

If you compile and run the following snippet, and then follow the steps below;
1. Click add new row (row is defaulted with values);
2. Change the value in the Status column to 4, then hit enter;
The display value for row 5 has been updated with the same values for status and review date.  However the underlying datasource is correctly updated.  The display is different to the underlying object.
This took a while to fathom out (Ive been working with legacy code implementing new features using the Telerik controls).  The problem occurs with the fact that in our ancestor class Equals has been overriden.  In the concrete classes a field called SqlKeyString is overriden and this provides a "key" for the objects to do an equality test.
It therefore looks like the RadGridView is using "Equals" rather than "==", my question is therefore should the RadGridView really be using "==" rather than "Equals"?
My 2nd issue with the gridview, is when adding a new row the CellFormatting doesnt apply to the new row.  When you click a new row in this example a date with value DateTime.MinValue should be displayed as an string.Empty, however the actual value is displayed.
Thanks for your attention,
Dave

                    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 TelerikDataGridView         
            {         
                #region Form         
                public class Form1 : Form         
                {         
                    public Form1()         
                    {         
                        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.radGridView1 = new Telerik.WinControls.UI.RadGridView();         
                        ((System.ComponentModel.ISupportInitialize)(this.radGridView1)).BeginInit();         
                        ((System.ComponentModel.ISupportInitialize)(this.radGridView1.MasterGridViewTemplate)).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(905, 285);         
                        this.radGridView1.TabIndex = 0;         
                        //          
                        // Form3         
                        //          
                        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);         
                        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;         
                        this.ClientSize = new System.Drawing.Size(905, 285);         
                        this.Controls.Add(this.radGridView1);         
                        this.Name = "Form3";         
                        this.Text = "Form3";         
                        ((System.ComponentModel.ISupportInitialize)(this.radGridView1.MasterGridViewTemplate)).EndInit();         
                        ((System.ComponentModel.ISupportInitialize)(this.radGridView1)).EndInit();         
                        this.ResumeLayout(false);         
                     
                    }         
                    
                    #endregion         
                     
                    private Telerik.WinControls.UI.RadGridView radGridView1;         
                    protected override void OnLoad(EventArgs e)         
                    {         
                        base.OnLoad(e);         
                        CreateGrid();         
                    }         
                    private void CreateGrid()         
                    {         
                        BindingSource source = new BindingSource();         
                        source.AllowNew = true;         
                        source.AddingNew += new AddingNewEventHandler(source_AddingNew);         
                     
                        source.DataSource = new MyCollection();         
                        this.radGridView1.MasterGridViewTemplate.AutoGenerateColumns = false;         
                        this.radGridView1.CellFormatting += new CellFormattingEventHandler(radGridView1_CellFormatting);         
                        radGridView1.DataSource = source;         
                     
                        AddTextColumn("FundManagerId", "Fund Manager");         
                        AddTextColumn("AssetClassId", "Asset Class");         
                        AddTextColumn("ClientOrgId", "Client");         
                        AddTextColumn("Status", "Status");         
                        AddDateColumn("ReviewDate", "Review Date", true);         
                     
                        radGridView1.MasterGridViewTemplate.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill;                     
                    }         
                     
                    void radGridView1_CellFormatting(object sender, CellFormattingEventArgs e)         
                    {         
                        if (e.CellElement is GridDateTimeCellElement)         
                        {         
                            GridDateTimeCellElement cell = e.CellElement as GridDateTimeCellElement;         
                            if (cell.IsEditMode)         
                                return;         
                     
                            if (((DateTime)cell.Value).Equals(DateTime.MinValue))         
                                cell.Text = string.Empty;         
                            else         
                                cell.Text = string.Format("{0:dd/MM/yyyy}", (DateTime)cell.Value);         
                        }          
                    }         
                    int assetClass = 5;         
                    void source_AddingNew(object sender, AddingNewEventArgs e)         
                    {         
                        e.NewObject = new MyClass(12, 5, assetClass++, 2, DateTime.MinValue);         
                    }         
                     
                    private void AddTextColumn(string field, string header)         
                    {         
                        AddTextColumn(field, header, false);         
                    }         
                    private void AddTextColumn(string field, string header, bool readOnly)         
                    {         
                        GridViewTextBoxColumn column = new GridViewTextBoxColumn(field);         
                        column.HeaderText = header;         
                        column.ReadOnly = readOnly;         
                        radGridView1.MasterGridViewTemplate.Columns.Add(column);         
                    }         
                    private void AddDateColumn(string field, string header)         
                    {         
                        AddDateColumn(field, header, false);         
                    }         
                    private void AddDateColumn(string field, string header, bool readOnly)         
                    {         
                        GridViewDateTimeColumn dateColumn = new GridViewDateTimeColumn();         
                        dateColumn.BestFit();         
                        dateColumn.FieldName = field;         
                        dateColumn.FormatString = "{0:dd/MM/yyyy}";         
                        dateColumn.HeaderText = header;         
                        dateColumn.ReadOnly = readOnly;         
                        dateColumn.TextAlignment = ContentAlignment.MiddleCenter;         
                        radGridView1.MasterGridViewTemplate.Columns.Add(dateColumn);         
                    }         
                }         
                #endregion         
                    
                #region DataSources         
                public class MyClass : InvestmentObject         
                {         
                    public MyClass(int client, int fundManager, int assetClass, int status, DateTime statusDate)         
                    {         
                        FundManagerId = fundManager;         
                        AssetClassId = assetClass;         
                        ClientOrgId = client;         
                        ReviewDate = statusDate;         
                        Status = status;         
                    }         
                    public MyClass(int client, int fundManager, int assetClass)         
                        : this(client, fundManager, assetClass, 1, DateTime.Now)         
                    {         
                     
                    }         
                    private int _fundManagerId;         
                    public int FundManagerId         
                    {         
                        get { return _fundManagerId; }         
                        set         
                        {         
                            _fundManagerId = value;         
                            OnPropertyChanged("FundManagerId");         
                        }         
                    }         
                     
                    private int _assetClassId;         
                    public int AssetClassId         
                    {         
                        get { return _assetClassId; }         
                        set         
                        {         
                            _assetClassId = value;         
                            OnPropertyChanged("AssetClassId");         
                        }         
                    }         
                     
                    private int _clientOrgId;         
                    public int ClientOrgId         
                    {         
                        get { return _clientOrgId; }         
                        set         
                        {         
                            _clientOrgId = value;         
                            OnPropertyChanged("ClientOrgId");         
                        }         
                    }         
                     
                    private int _status;         
                    public int Status         
                    {         
                        get { return _status; }         
                        set         
                        {         
                            _status = value;         
                            OnPropertyChanged("Status");         
                        }         
                    }         
                     
                    private DateTime _reviewDate;         
                    public DateTime ReviewDate         
                    {         
                        get { return _reviewDate; }         
                        set         
                        {         
                            _reviewDate = value;         
                            OnPropertyChanged("ReviewDate");         
                        }         
                    }         
                     
                    public override string SqlKeyString         
                    {         
                        get         
                        {         
                            return string.Format("FundManagerId={0} and AssetClassId={1} and ClientOrgId={2}"         
                              , FundManagerId, AssetClassId, ClientOrgId);         
                        }         
                    }         
                }         
                     
                public class MyCollection : DataList<MyClass>         
                {         
                    public MyCollection()         
                    {         
                        Add(new MyClass(12, 5, 1));         
                        Add(new MyClass(12, 5, 2));         
                        Add(new MyClass(12, 5, 3));         
                        Add(new MyClass(12, 5, 4));         
                        Add(new MyClass(12, 5, 5));         
                    }         
                }         
                #endregion         
                    
                #region Supporting Data Objects         
                public abstract class DataList<T> : BindingList<T>         
                {         
                    public void Sort(Comparison<T> comparer)         
                    {         
                        ((List<T>)this.Items).Sort(comparer);         
                    }         
                    public void Sort(IComparer<T> comparer)         
                    {         
                        ((List<T>)this.Items).Sort(comparer);         
                    }         
                }         
                public abstract class InvestmentObject : INotifyPropertyChanged         
                {         
                    #region Private Fields         
                     
                    private DateTime lastModified;         
                    private Guid guid;         
                    
                    #endregion         
                    
                    #region Constructors         
                     
                    protected InvestmentObject()         
                        : base()         
                    {         
                        lastModified = DateTime.Now;         
                        guid = Guid.NewGuid();         
                    }         
                    
                    #endregion         
                    
                    #region Data Properties         
                     
                    public DateTime LastModified         
                    {         
                        get { return lastModified; }         
                        protected set { lastModified = value; }         
                    }         
                     
                    public Guid CurrentGUID         
                    {         
                        get { return guid; }         
                        protected set { guid = value; }         
                    }         
                    #endregion         
                     
                    public override bool Equals(object obj)         
                    {         
                        if ((obj != null) && (obj.GetType() == this.GetType()))         
                        {         
                            InvestmentObject dataAccessObject = obj as InvestmentObject;         
                     
                            return (dataAccessObject.SqlKeyString == this.SqlKeyString);         
                        }         
                        else return false;         
                    }         
                    public override int GetHashCode()         
                    {         
                        return (this.GetType().ToString() + SqlKeyString).GetHashCode();         
                    }         
                    #region Abstract         
                    public abstract string SqlKeyString { get; }         
                    #endregion         
                    #region INotifyPropertyChanged Members         
                     
                    public event PropertyChangedEventHandler PropertyChanged;         
                     
                    protected virtual void OnPropertyChanged(string field)         
                    {         
                        if (PropertyChanged != null)         
                            PropertyChanged(this, new PropertyChangedEventArgs(field));         
                    }         
                    
                    #endregion         
                }         
                #endregion         
            }         
                     

GridView

answered on 12 Feb 2010

Top users last month