Questions on UI for WinForms Forum

1 answer

128 views

GridViewSummaryItem with costum AggregateFunction

Hi,

is it possibly to implement a GridViewSummaryItem with a AggregateFunction like "Sum / 4.0" ?

Thanks

Edit: I solved the problem.

I implemented a derived class from GridViewSummaryItem and overrided void EvaluateAggregate(GroupSummaryEvaluationEventArgs e)

GridView

answered on 01 Jul 2010

1 answer

141 views

How to cancel the window changing

Hi,
i have a problem canceling the ActiveWindowChanging events.
When i enter in this event i check if the last ActiveWindow is updated. If not i ask user to chose to save, or not, data to db.
If user chose to save, i update data in db, and proced changing the Active Window, as user wants. But when i save data, if i get an exception, i send a msgbox to user, and i want to "reactivate" the last ActiveWindow. In this way, the user can edit data to complete it or discard it.
How can i cancel the window changing?
I try with e.cancel = true, but the program loops :(

    
                Private Sub RadDock1_ActiveWindowChanging(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.Docking.DockWindowCancelEventArgs) Handles RadDock1.ActiveWindowChanging 
        
                    ' Salvo il Layout del tab che sto chiudendo 
        
                    For Each c As Control In RadDock1.ActiveWindow.Controls 
        
                        Select Case c.GetType.ToString 
        
                            Case "Commesse" 
        
                                Dim mycontrol As AnagraficaCommesse = TryCast(c, AnagraficaCommesse) 
        
                                mycontrol.SaveGridLayout() 
        
                            Case "Articoli" 
        
                                Dim mycontrol As Commesse_Articoli = TryCast(c, Commesse_Articoli) 
        
                                mycontrol.SaveGridLayout() 
        
                                If mycontrol.RadGridView1.IsInEditMode() Then 
        
                                    If MsgBox("Un record non è stato salvato! Si desidera salvarlo ora?", MsgBoxStyle.YesNo, "Salvare i dati?") = MsgBoxResult.Yes Then 
        
                                        Try 
        
                                            mycontrol.RadGridView1.EndEdit() 
        
                                            mycontrol.UpdateDataSource() 
        
                                        Catch ex As Exception 
        
                                            MsgBox("Si è verificato un problema durante il salvataggio dei dati. Controllare che i dati inseriti siano corretti", MsgBoxStyle.Critical, "Errore") 
        
                                            e.Cancel = True 
        
                                        End Try 
        
                                    Else 
        
                                        mycontrol.RadGridView1.EndEdit() 
        
                                    End If 
        
                                End If 
        
                        End Select 
        
                    Next 
        
                End Sub

I'm sorry if code is not clear; this is only for understand if i wrong something in it, with the e.cancel = true.

Thanks

Dock

answered on 01 Jul 2010

1 answer

105 views

Exporting grid virtual mode

Hi, i'm having trouble trying to export the grid. Whenever i export the data i only get the visible part of it. I cannot find to much info about how i have to do it. Could someone please help me?

Regards.

GridView

answered on 01 Jul 2010

1 answer

113 views

RadButtonItem - problem with Shortcuts

Hi everyone,

I would like to add a shortcut to my RadButtonItem without any Keys modifiers.
And the problem is I have no idea how I could make it without displaying the Delimiter - "+" (RadShortcut.Delimiter).

Code:

    
            radButtonItem.Shortcuts.Add(new RadShortcut(0,Keys.F5));

Result:
Menu item look:
"text +F5"
http://img195.imageshack.us/img195/7698/menushortcuts.jpg or attachments

Any ideas how I could remove this Delimiter?

Thanks in advance,
Adam

General Discussions

answered on 01 Jul 2010

2 answers

231 views

RadMenuItem inheritance display issue

I am trying to inherit RadMenuItem (sample bellow), in order to add more properties required by our application.

    
            Public Class TestMenuItem 
        
                Inherits RadMenuItem 
        
                Public Sub New() 
        
                    Me.New("", Nothing) 
        
                End Sub 
        
                Public Sub New(ByVal text As String) 
        
                    Me.New(text, Nothing) 
        
                End Sub 
        
                Public Sub New(ByVal text As String, ByVal tag As Object) 
        
                    MyBase.New(text, tag) 
        
                End Sub 
        
            End Class

When I try to add this new RadMenuItem in a RadMenu object, the visual display of the item is different from the actual RadMenuItem. I guess it is a ThemeEngine glitch. Do you have any advice on how to correctly inherit RadMenuItem?

This is a sample form where two menu items are added, one standard RadMenuItem (test1) and one from the inherited TestMenuItem (test2). Form1 has a RadMenu control added and it is a standard Windows.Form form.

    
            Public Class Form1 
        
                Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 
        
                    Dim mi1 As New RadMenuItem("test1") 
        
                    Dim mi2 As New testMenuItem("test2") 
        
                    Me.RadMenuItem1.Items.Add(mi1) 
        
                    Me.RadMenuItem1.Items.Add(mi2) 
        
                End Sub 
        
            End Class

In the attached image you can see the resulting runtime form with the difference in visual display of the two menu items.

We are currently evaluating your WinForms controls and we have little to no experience with your libraries :).

Menu

answered on 01 Jul 2010

1 answer

170 views

Docking Style problem.

Ok. I'm not 100% sure how to explain this: so here goes.

I have a user control that I made (see attachment control.jpg).

on loading the application I use the following code to dynamically create tabs. (Page is the usercontrol).

                    for (int i = 0; i < dtTabs.Rows.Count; i++)         
            {         
                               
                            Page cp = new Page(dtTabs.Rows[i].ItemArray[1].ToString(), sCon, at, isPrimary,this);         
                            cp.Dock = DockStyle.Fill;         
                            RadPanel rp = new RadPanel();         
                            rp.Controls.Add(cp);         
                            rp.Dock = DockStyle.Fill;         
                     
                            TabItem tab = new TabItem();         
                            tab.Alignment = System.Drawing.ContentAlignment.BottomLeft;         
                    tab.Name = dtTabs.Rows[i].ItemArray[1].ToString();         
                            tab.Text = dtTabs.Rows[i].ItemArray[1].ToString();         
                            tab.DisplayStyle = DisplayStyle.ImageAndText;         
                            tab.TextImageRelation = TextImageRelation.ImageBeforeText;         
                                     
                     
                            tab.ContentPanel.Controls.Add(rp);         
                            cp.StartRefresh();         
                     
                            tabMain.Items.Add(tab);         
                     
                     
                        }         
                     

however when I use the dock.Fill property, or the anchor properties... the control does not display properly... it cuts off the bottom of the control and the right of the control.. See attachment (main.jpg);

Form

answered on 01 Jul 2010

4 answers

1.2K+ views

Set RadGridView Header Font At DesignTime

Hi
i'm using radGridView and it seems that i cant set the grid header font at design time.
i've tried Element Hierarchy Editor and i've set my font in GridHeaderElement, but it seems it does not work.

i'm using 2010 Q2 and my grid is in ( RightToLeft = True) mode.

is there any other way to modify grid header at runtime?

ps: i also cant set header height in Element Hierarchy Editor :(

tanx in advance

GridView

answered on 01 Jul 2010

1 answer

126 views

.MaximizeBox = false / true (Not Working)

here is the idea of the code used to demo this bug.

create a new class

public partial class MainForm : Applications.UI.ShadowForm
{
   //in here create another class
   ChildClass cClass = new ChildClass()

   //link the parent object to the child class
   cClass._parent = this.

   //in the InitializeComponent tell it to hide the max button
   ....
    this.MaximizeBox = false;
   ....

//tell the application to show you child class
   cClass.Show()

}

in the cClass modifiy the parent MaximizeBox to true

Result the box does not display untill you resize the parent. forcing it to re-draw.

General Discussions

answered on 01 Jul 2010

3 answers

201 views

RadGrid Re-Bind Exception

Hi,

When i try to re-bind the datasource in RadGridView Selection Changed event throws the below exception : System.NullReferenceException: Object reference not set to an instance of an object. Pls any solution for this.

SampleCode :

using

System;

using

System.Collections.Generic;

using

System.ComponentModel;

using

System.Data;

using

System.Drawing;

using

System.Text;

using

System.Windows.Forms;

using

Telerik.WinControls;

using

Telerik.WinControls.UI;

namespace

RadGrid

{

public partial class RadForm1 : Telerik.WinControls.UI.RadForm

{

DataTable dtUserDetails = new DataTable();

public RadForm1()

{

InitializeComponent();

radGridView1.GridBehavior =

new GridBehavior();

}

private void RadForm1_Load(object sender, EventArgs e)

{

dtUserDetails.Columns.Add(

"ID");

dtUserDetails.Columns.Add(

"Name");

DataRow newRow;

for (int rowIndex = 0; rowIndex < 4; rowIndex++)

{

newRow = dtUserDetails.NewRow();

newRow[

"ID"] = rowIndex;

if (rowIndex == 0)

{

newRow[

"Name"] = "A";

}

else if (rowIndex == 1)

{

newRow[

"Name"] = "B";

}

else if (rowIndex == 2)

{

newRow[

"Name"] = "C";

}

else if (rowIndex == 3)

{

newRow[

"Name"] = "D";

}

else if (rowIndex == 4)

{

newRow[

"Name"] = "E";

}

else if (rowIndex == 5)

{

newRow[

"Name"] = "E";

}

dtUserDetails.Rows.Add(newRow);

}

dtUserDetails.AcceptChanges();

radGridView1.DataSource = dtUserDetails;

radTextBox1.DataBindings.Add(

"Text", dtUserDetails, "ID" );

radTextBox2.DataBindings.Add(

"Text", dtUserDetails, "Name");

}

private void radGridView1_SelectionChanged(object sender, EventArgs e)

{

//radGridView1.EndEdit();

if (dtUserDetails.GetChanges() != null)

{

if (MessageBox.Show("Do you want to save the changes", "Save", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)

{

this.radGridView1.GridElement.BeginUpdate();

radGridView1.Relations.Clear();

dtUserDetails.AcceptChanges();

this.radGridView1.GridElement.EndUpdate();

//radGridView1.DataSource = null;

//radGridView1.DataSource = dtUserDetails;

}

private void radGridView1_ValueChanged(object sender, EventArgs e)

{

//radGridView1.EndEdit();

}

private void radGridView1_CurrentColumnChanged(object sender, CurrentColumnChangedEventArgs e)

{

}

private void radGridView1_RowsChanged(object sender, GridViewCollectionChangedEventArgs e)

{

if (dtUserDetails.GetChanges() != null)

{

if (MessageBox.Show("Do you want to save the changes", "Save", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)

{

this.radGridView1.GridElement.BeginUpdate();

dtUserDetails.AcceptChanges();

//this.suppliersTableAdapter.Fill(this.nwindDataSet.Suppliers);

this.radGridView1.GridElement.EndUpdate();

//radGridView1.DataSource = null;

//radGridView1.DataSource = dtUserDetails;

}

public class GridBehavior : Telerik.WinControls.UI.BaseGridBehavior

{

protected override bool OnMouseDownLeft(MouseEventArgs e)

{

GridDataCellElement cell = this.GridControl.ElementTree.GetElementAtPoint(e.Location) as GridDataCellElement;

if (cell != null

&& !cell.Equals(

this.GridControl.CurrentCell)

&& cell.RowInfo.Equals(

this.GridControl.CurrentRow)

&& cell.ColumnInfo.ReadOnly)

{

this.GridControl.EndEdit();

}

try

{

return base.OnMouseDownLeft(e);

}

catch (Exception ex)

{

MessageBox.Show(ex.Message);

return true;

}

GridView

answered on 01 Jul 2010

1 answer

215 views

Panels like the SettingsPanel in Example project?

Hello!

I have read the following two posts

http://www.telerik.com/community/forums/wpf/panelbar/horizontal-collapse-panel.aspx

http://www.telerik.com/community/forums/winforms/panels-and-labels/collapsible-panels.aspx

And I am wondering, are the collapsing side panels in the Telerik examples project in WPF and thus not available in WinForms? I need something exactly like that for my WinForms app, but I'm not sure if it exists (at least due to the second post I included above, where using the XP Collapsible Pane will not work for what I'm after...as I'm trying to find something similar to Visual Studio's Solution Explorer and Properties side bars without the pinning) Are there any WinForms controls like that or is the XP Collapsible Pane the only option?

Thanks for your time!

Panel

answered on 30 Jun 2010