Questions on UI for WinForms Forum

9 answers

204 views

AutoCompleteBox: Change casing on CreateTextBlock

Telerik,

I am trying to auto fix the casing if a tag is being entered that is already in the AutoCompleteItems list. I am handling the CreateTextBlock event and keep getting an object reference not set to an instance of an object. error when trying to create the new TokenizedTextBlockElement.

Maybe there is a better way ?

Private Sub RadAutoCompleteBox_CreateTextBlock(sender As Object, e As CreateTextBlockEventArgs)

If TypeOf e.TextBlock Is TokenizedTextBlockElement Then

For Each item As RadListDataItem In RadAutoCompleteBox1.AutoCompleteItems

If item.Text.ToLower = e.Text.ToLower Then

e.TextBlock = New TokenizedTextBlockElement(item.Text)

Exit For

End If

Next

End If

End Sub

AutoCompleteBox

answered on 27 May 2013

3 answers

126 views

AutoCompleteBox: Keypress simulating alt and letter

Telerik,

I am using a few different control suites and am experiencing the following behavior with the RadAutoCompleteBox and a winforms button control.

Steps to reproduce.

1) Drop a RadAutoCompleteBox control on a form.
2) Drop a regular windows form button on the same form.
3) Have the text of the button be &Save and add a message box behind the button.
4) Run the application and press s in the radautocompletebox.

You will notice that the message box is being called. One of the other control toolkits that we are using is inheriting the windows controls. This behavior does not happen when a RadButton is used. However, this is not a acceptable workaround for us.

Thanks

AutoCompleteBox

answered on 27 May 2013

2 answers

100 views

Self-referencing freeze

I'm facing strange self-referencing grid behaviour. Symptoms:
1) All rows (even without children) contains "+"
2) Expanding parent row cause freeze without any exception thrown.

Object:

public class MyObject

{

public long Id {get; set;}

public string Name {get; set;}

public string Code {get; set;}

public MyObject Parent {get;set;}

}

Grid contains columns for Code and Name defined in designer.
Than I'm adding self reference:

GridViewTextBoxColumn col1 = new GridViewTextBoxColumn("Id", "Id");

GridViewTextBoxColumn col2 = new GridViewTextBoxColumn("ParentId", "Parent.Id");

grid.MasterTemplate.Columns.Add(col1);

grid.MasterTemplate.Columns.Add(col2);

grid.Columns["Id"].IsVisible = false;

grid.Columns["ParentId"].IsVisible = false;

grid.Relations.AddSelfReference(grid.MasterTemplate, "Id", "ParentId");

And data populating:

private void Populate(IList<MyObject> dataToPopulate)

{

this.grid.BeginUpdate();

var relationsBackup = this.grid.Relations.ToList();

this.grid.Relations.Clear();

this.grid.DataSource = dataToPopulate;

this.grid.Relations.AddRange(relationsBackup);

this.grid.EndUpdate();

this.grid.MasterView.Refresh();

}

Thank for any suggestion in advance.

GridView

answered on 27 May 2013

8 answers

195 views

Node Appearance

I'm copying again. I think this is a TreeView. The attached image has my questions.

Treeview

answered on 24 May 2013

2 answers

111 views

MaskedEdit does not exclure mask caracters?

Hi,

I'm trying to add a phone number column using the MaskedEditColumn and store it in a nullable double property of a business object, without the mask. However, the code is crashing the I'm leaving the cell with an exception about DataConversion. I found that the value that the grid is trying to set in the PhoneDouble property contains the mask, so the conversion fails. How can I make it work? I thought the MaskFormat = MaskFormat.ExcludePromptAndLiterals would fix that but it doesn't.

I'm using v.2013.1.220.40

Thanks!

--
Frank

public static class GridUtils

{

public static GridViewMaskBoxColumn AddPhoneNumberColumn(this RadGridView grid, string uniqueName, string fieldName, string headerText, Type type)

{

GridViewMaskBoxColumn col = new GridViewMaskBoxColumn();

col.Name = uniqueName;

col.FieldName = fieldName;

col.HeaderText = headerText;

col.MaskType = MaskType.Standard;

col.Mask = "(000) 000-0000";

col.FormatString = "{0:(###) ###-####}";

col.TextMaskFormat = MaskFormat.ExcludePromptAndLiterals;

col.DataType = type;

grid.Columns.Add(col);

return col;

}

public class Form2 : Form

{

private BindingList<TestClass> _dataSource;

public class TestClass

{

private string _string;

private double? _double;

public string PhoneString

{

get { return this._string; }

set { this._string = value; }

}

public double? PhoneDouble

{

get { return this._double; }

set { this._double = value; }

}

public Form2()

{

InitializeComponent();

this.radGridView1.AutoGenerateColumns = false;

this.radGridView1.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill;

this.radGridView1.AddPhoneNumberColumn("stringMasked", "PhoneString", "PhoneStringMasked", typeof(string));

this.radGridView1.AddPhoneNumberColumn("doubleMasked", "PhoneDouble", "PhoneDoubleMasked", typeof(double?));

this._dataSource = new BindingList<TestClass>();

this._dataSource.Add(new TestClass() { PhoneDouble = 5554443333, PhoneString = "5554443333" });

this.radGridView1.DataSource = this._dataSource;

}

#region Designer

/// <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();

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(607, 284);

this.radGridView1.TabIndex = 0;

this.radGridView1.Text = "radGridView1";

//

// Form2

//

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

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

this.ClientSize = new System.Drawing.Size(607, 284);

this.Controls.Add(this.radGridView1);

this.Name = "Form2";

this.Text = "Form2";

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

this.ResumeLayout(false);

}

private Telerik.WinControls.UI.RadGridView radGridView1;

#endregion

}

GridView

answered on 24 May 2013

4 answers

141 views

Printing Grid

I have a problem I have a grid that has a commandcolumn in it. When the user tries to print the grid it also prints the commandcolumn which it shouldn't do. So i though i had found a work around for it by making the column not visible when passed the grid to the radprintdoucment. The problem is though when i re-size the margins on the print document it is bringing back the command column. I was wondering if anyone had any idea of how i would go about fixing this. My thought was to do the following, but when i do that if i delete one grids cart column it deletes both of them. How can I delete the cart column in just the TGrid?

Dim tGrid As New RadGridView

tGrid = grdItem

tGrid.Columns.Remove("cart")

PrintReport(tGrid, rptname & " Report")

GridView

answered on 23 May 2013

1 answer

262 views

Telerik Gridview header checkbox cell radiobutton

Hi, I have a project requirement where header of telerik gridview will be a checkbox and columns below this header should be radiobutton.
I need urgent help to resolve this issue. I had attached pic where i last three colum that is Merge,Overwrite and Ignore should have checkbox colum and data under these column should be radio button. Grouping of these radio button will be per row. User can select multiple rows and pressing checkbox will check/uncheck those rows radiobuttons. My real problem is column header checkbox and datacolumn as radio box.

GridView

answered on 23 May 2013

0 answers

81 views

Development Tool Combinations

Hi,

I'm wondering whether there are any other developers using Telerik tools who also use CodeFluent Entities and VB.NET. I'm building an application using Visual Studio 2012 Professional, SQL Server 2008 R2 and Telerik Win Forms toolkit (latest release Q1 2013), .NET Framework 4.5 and CodeFluent Entities. If you have to ask what CodeFluent Entities is then you're not using it but it's a model-driven code and database generation toolkit that integrates into Visual Studio as an add-in in exactly the same way that Telerik does.

Without in any way being critical of the support provided by either Telerik or CodeFluent, who have both been very responsive and helpful, I'm struggling to resolve what I think should be a relatively simple problem, that of editing a collection of objects via a RadGridView control. CodeFluent generates objects and collections and the methods to Load and Save the members of those collections.

Telerik quite rightly doesn't test their toolkits against CodeFluent Entities and CodeFluent doesn't test their software against Telerik toolkits. I receive an error in certain circumstances which can't be easily tested by either Telerik or CodeFluent so it's hard to know where to look, so before I post a specific question I wanted to find out whether there are any other users out there developing with this combination of tools or am I doing this on my own?

Any assistance will be greatly appreciated.

Thanks in anticipation

Peter

General Discussions

asked on 23 May 2013

3 answers

372 views

RadGridView disabling add/delete/edit rows

Hi im using entity framework to bind the datasource of a RadGridView

private void cmbUsers_SelectedValueChanged(object sender, EventArgs e)

{

cmbUsers.ValueMember = "Id";

var resguardos = from e1 in context.tblBienes

where e1.IdResponsable == (long)cmbUsuarios.SelectedValue

select new

{

Id = e1.IdBien,

Descripcion = e1.descripcion,

Estado = e1.estado,

Placa_Anterior = e1.placaAnterior,

Placa_Nueva = e1.placaNueva,

Ubicacion = e1.ubicacion,

Fecha_De_Asignacion = e1.fechaAsignacion,

Etiqueta = e1.etiqueta,

Procuraduria = context.tblProcuradurias.Where(e2 => (e2.IdProcuraduria == (long)cmbProcuradurias.SelectedValue)).Select((e2 => e2.ciudad)).FirstOrDefault()

};

rgvResguardos.DataSource = resguardos;

}

rgvResguardos its a DataGridView and the result of the linq to entities its being given as datasource to it. i enabled Ading and enabled Editing on rgvResguardos but when i run my app it displays data but it doesnt allow me to add new rows nor editing or deleteing.

is there any way to enable this options? i know i have to take care of inserting, deleteing and updating info on the database.

GridView

answered on 22 May 2013

2 answers

77 views

Exporting to excel fails for column bound to datatype char

Hi.

I have an object with a property of type char like this:

public class DummyModel

{

public string Stringtest { get; set; }

public char Chartest { get; set; }

}

When binding a grid to a list of this objects the values in the char property are displayed correctly in a grid column.

But when I export the grid using ExcelML the column in Excel comes up empty.
Doesn't ExcelML support exporting the char datatype?

GridView

answered on 22 May 2013