Questions on UI for WinForms Forum

6 answers

409 views

How to change icon for error notification in row header?

Hi

By default if validation for row failed there is icon with exclamation mark in row header (I use GridViewRowInfo.ErrorText to define text for tool tip).

I would like to use my own icon. How can I do it?

Regards

GridView

answered on 07 Apr 2011

4 answers

129 views

Gridview combo column/avoid selecting repeted value from combo box..

Hi Telerik,
I have a Radgridview with combo box column . consider i have 3 rows.
in the first row am selecting some value like "x" from the combobox column ,
then when i select the same value "x" in the second row , i should say the value x is already selected
i guess we have to loop the columns across the gridview .... could anybody provide some idea

Thanks in Advance
Dev

GridView

answered on 07 Apr 2011

1 answer

195 views

F1 KeyDown Event

Hello,

I can't seem to trap any Function keys while editing a cell on the radGridView. Could you provide any clues where I am going wrong? I have practically copied the code from your help documentation. If I press Ctrl+L then all works fine.

Regards

Terry

Public Class Form1

Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load

Me.KeyPreview = True

Dim x As Boolean

x = LogIntoSQL()

If x = True Then

Try

myList = New BindingList(Of CompanyHistory)()

LoadNewCompanyHistory()

RadGridView1.DataSource = myList

Catch ex As Exception

MsgBox(ex.Message)

End Try

End If

End Sub

Private tbSubscribed As Boolean = False

Private Sub radGridView1_CellEditorInitialized(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.GridViewCellEventArgs)

Dim tbEditor As RadTextBoxEditor = TryCast(Me.RadGridView1.ActiveEditor, RadTextBoxEditor)

If Not tbEditor Is Nothing Then

If (Not tbSubscribed) Then

tbSubscribed = True

Dim tbElement As RadTextBoxEditorElement = CType(tbEditor.EditorElement, RadTextBoxEditorElement)

AddHandler tbElement.KeyDown, AddressOf tbElement_KeyDown

End If

End Sub

Private Sub tbElement_KeyDown(ByVal sender As Object, ByVal e As KeyEventArgs)

If e.Control Then

If e.KeyCode = Keys.F1 Then

CType(sender, RadTextBoxEditorElement).Text = "F1"

End If

If e.KeyCode = Keys.F2 Then

CType(sender, RadTextBoxEditorElement).Text = "F2"

End If

If e.KeyCode = Keys.L Then

CType(sender, RadTextBoxEditorElement).Text = "LLLL"

End If

End Sub

Public Sub New()

' This call is required by the designer.

InitializeComponent()

' Add any initialization after the InitializeComponent() call.

AddHandler RadGridView1.CellEditorInitialized, AddressOf radGridView1_CellEditorInitialized

End Sub

End Class

GridView

answered on 06 Apr 2011

2 answers

222 views

Button Click Event

Hi

I have created a button in code like this:

Dim RadRibbonBarGroup_Main = New RadRibbonBarGroup()

Dim RadRibbonBarButtonGroup_Main = New RadRibbonBarButtonGroup

Dim btnExtract As New RadButtonElement()

RadRibbonBarGroup_Main.Items.AddRange(

New Telerik.WinControls.RadItem() {RadRibbonBarButtonGroup_Main})

RadRibbonBarGroup_Main.Name =

"RadRibbonBarGroup_Main"

RadRibbonBarGroup_Main.Text =

"Extract Data"

RadRibbonBarGroup_Main.Alignment =

ContentAlignment.TopCenter

btnExtract.Name =

"btnExtract"

btnExtract.Text =

"Extract"

btnExtract.Class =

"ButtonElement"

btnExtract.Image =

Global.culminTelFormLib.My.Resources.Resources.Database_export_32()

btnExtract.ImageAlignment = System.Drawing.

ContentAlignment.MiddleCenter

btnExtract.TextImageRelation = System.Windows.Forms.

TextImageRelation.ImageAboveText

RadRibbonBarButtonGroup_Main.Items.AddRange(

New Telerik.WinControls.RadItem() {btnExtract})

RadRibbonBarButtonGroup_Main.Name =

"RadRibbonBarButtonGroup_Main"

RadRibbonBarButtonGroup_Main.Text =

"RadRibbonBarButtonGroup_Main"

RadRibbonBarButtonGroup_Main.Alignment =

ContentAlignment.TopCenter

Me.tabHome.Items.Insert(0, RadRibbonBarGroup_Main)

Now I want to use the click event. How would I go about doing this?

I have tried adding the following code to the form but it still does not work. What am I doing wrong?:

Public WithEvents btnExtract As Telerik.WinControls.UI.RadButtonElement

Protected Sub btnExtract_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExtract.Click

If IsNothing(frmLoad) Then

frmLoad =

New frmTaxSageLoad

frmLoad.Show()

frmLoad.WindowState =

FormWindowState.Maximized

Else

frmLoad.BringToFront()

End If

End Sub

Thanks
Celeste

Buttons, RadioButton, CheckBox, etc

answered on 06 Apr 2011

1 answer

110 views

Different font height

Hello,
I used menu system from demo application using Treeview. With new version it wont work. I need set different font height for different parts of TreeView. Is it possible to set different font size for Root element and different size for other elements?
ItemHeight property of RadTreeNode does not work. TreeViewElement is NULL, so also this does not work:

myNode.TreeViewElement.ItemHeight = 30;

Use demo application latest treeview or older one?

Treeview

answered on 06 Apr 2011

8 answers

775 views

Gridview Saving new data

Hi all,

I've found literally thousands of examples, tutorials, videos and posts showing me how to use the gridview effectively to DISPLAY data.. I have that down pat... What I haven't been able to find are examples of how to SAVE new or updated rows back to the DB.

I know it works very easily using all the drag and drop within VS.. my issue is I have to work with SQL Server 2000, which is not supported with any VS drag and drop.. so I'm having to use a combination of business objects and data tables to bind to my gridview.

What I need is to know how to allow the user to change data in these grids and save the data back to SQL2000..

Any help would be greatly appreciated!

Thanks,

Matt

GridView

answered on 06 Apr 2011

2 answers

144 views

RadGridView1.Rows.AddNew not assigning default values

I am using an unbound grid. Adding columns and rows programmatically to the grid in a sub procedure I am calling InitializeGrid. At the end of this initialize procedure I have the following code

AddHandler RadGridView1.DefaultValuesNeeded, AddressOf radGridView1_DefaultValuesNeeded

This works fine when the user clicks on "Click here to add a new row" message. It assigns the default values as specified in the radGridView1_DefaultValuesNeeded sub. But it doesn't work when I do that programmatically by calling the RadGridView1.Rows.AddNew method. How can I programmatically mimic the user clicking on "Click here to add a new row"?

Thank you

GridView

answered on 06 Apr 2011

1 answer

169 views

Export to excel problem.

Hello,
i implemented export to excel using RadGridViewExcelExporter and i have some question:
1. In grid i have radgridcomboboxcolumn and i use dictionary to show data f.e
DataSource = bindingSource(Dictionary)
Display member = Value
Fieldname = Id
ValueMember = Key
when i export data to excel in this column i have Id but i want to export Value f.e "Dog". Can I change it ?
2. RadGridViewExcelExporter is very slow f.e 1000 rows ;/, can i optymize this mechanism ?
3. I try to use ExportCSV, but i have comma separated "," and in excel i must have ";" for good formatting, can i change it ?
Thanks for any help.

GridView

answered on 05 Apr 2011

1 answer

136 views

Multiple relations in Hierarchical Grid

Hi,

I have a hierarchical gridview, for which I want to add more than one relations. I tried adding one relation between my master template and child template as explained by you in the link http://www.telerik.com/help/winforms/gridview-hierarchical-grid-tutorial-binding-to-hierarchical-data.html, it works perfectly fine and I was able to view the rows in the parent and child grids.

But when I try to add more than one relations between my master and child template in the GridViewRelation Collection Editor, it doesnt work and no error messages at all. My parent grid is getting populated but when I try to expand the + link, my child grid is not getting displayed. (The columns values are same).

Need you help on this.

Regards,
Gokul

GridView

answered on 05 Apr 2011

5 answers

203 views

GridView children values update issue

Hi,

I have two level object related hierarchy grid.
Child object field depends on Parent object field.
When changing a value in parent object it does not update children rows.
But it updates parent row itself. We can see it on C field which depends on that value too.

Here is the code:

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

{

List<A> glist;

public RadForm1()

{

InitializeComponent();

glist = new List<A>();

A objA = new A();

objA.B = 10;

objA.L.Add(new B("asdf1"));

objA.L.Add(new B("asdf2"));

objA.L.Add(new B("asdf3"));

objA.L.Add(new B("asdf4"));

A objB = new A();

objB.B = 20;

objB.L.Add(new B("f1"));

objB.L.Add(new B("f2"));

objB.L.Add(new B("f3"));

objB.L.Add(new B("F4"));

glist.Add(objA);

glist.Add(objB);

gv.DataSource = glist;

gv.AutoGenerateHierarchy = true;

gv.Columns["L"].IsVisible = false;

}

class A

{

List<B> list;

int b;

int c;

public A()

{

list = new List<B>();

}

public List<B> L

{

get { return this.list; }

set { this.list = value; }

}

public int B

{

get {return this.b;}

set

{

this.b = value;

this.c = value * 5;

foreach (B bb in L)

bb.a = value;

}

public int C

{

get { return this.c; }

}

class B

{

int _a;

string _b;

public B()

{ }

public B(string stringparam)

{

b = stringparam;

}

public int a

{

get { return this._a; }

set { this._a = value; }

}

public string b

{

get { return this._b; }

set { this._b = value; }

}

GridView

answered on 05 Apr 2011