Questions on UI for WinForms Forum

4 answers

249 views

[Solved] Having problems with CRUD using entities

Ok i am using Entity Framework to access my data, I have no problem adding a record or deleting a record. But when I want to update a record I cant figure out what events to capture.

I have tried adding a RadGridView1_RowsChanged to the code and it works great for the update, but my problem occurs now that when I add a record to the grid RadGridView1_RowsChanged gets called before RadGridView1_UserAddedRow.

In fact the NotifyCollectionChangedAction.ItemChanged gets called before NotifyCollectionChangedAction.Add gets called
So as soon as I leave a cell in the row my itemchanged fires before the add and i get problems.

How can i idenitfy if row is being added instead of updated. I sue wish there was a UserUpdatedRow event

Any help is appreciated

Public Class ManageMemberType

Public context As New MIMSModel.MIMSEntities

Dim newMemType As MemType

Dim updMemType As MemType

Dim dmemtype As MemType

Dim rtype As String

Private Sub ManageCompanyType_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

Dim query = (From m In context.MemTypes Select m).ToList

RadGridView1.DataSource = query

End Sub

Private Sub RadGridView1_RowsChanged(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.GridViewCollectionChangedEventArgs) Handles RadGridView1.RowsChanged

If e.Action = Telerik.WinControls.Data.NotifyCollectionChangedAction.ItemChanged Then

Dim updrow As GridViewDataRowInfo = CType(e.NewItems(0), GridViewDataRowInfo)

updMemType = MemType.CreateMemType(updrow.Cells("Type").Value.ToString)

updMemType.Desc = updrow.Cells("Desc").Value.ToString

DataAccess.UpdateEntity(updMemType, "MemTypes")

End If

End Sub

Private Sub RadGridView1_UserAddedRow(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.GridViewRowEventArgs) Handles RadGridView1.UserAddedRow

newMemType = MemType.CreateMemType(e.Row.Cells.Item("Type").Value.ToString)

newMemType.Desc = e.Row.Cells.Item("Desc").Value.ToString

Try

context.MemTypes.AddObject(newMemType)

context.SaveChanges()

MsgBox("record Added")

Catch ex As UpdateException

e.Row.Delete()

MsgBox(String.Format("The object could not be added. Make sure that a Member type of '{0}' does not aleady exist.", newMemType.Type))

End Try

End Sub

Private Sub RadGridView1_UserDeletingRow(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.GridViewRowCancelEventArgs) Handles RadGridView1.UserDeletingRow

rtype = e.Rows(0).Cells(0).Value.ToString()

Dim rcount = (From r In context.GetCompanyInfoes Where r.CompanyType = rtype Select r).Count

If rcount > 0 Then

MsgBox("There are " + rcount.ToString + " companies assigned to this member type, You cannot delete this type")

Else

Try

dmemtype = MemType.CreateMemType(rtype)

DataAccess.DeleteEntity(dmemtype, "MemTypes")

Catch ex As Exception

MsgBox("There was a problem deleting the Member type of " + rtype + " Please notify IT")

End Try

End If

End Sub

End Class

GridView

answered on 25 Jan 2011

1 answer

128 views

[Solved] Q3 Rad Controls

I got the new version Q3 2010 after I was using 2009 Q2
I uninstalled all 2009 files and installed the new Q3
Now, all my old applications that I developed using Telerik Controls are giving errors and I spend hours repairing references
is there any solutions?

General Discussions

answered on 25 Jan 2011

6 answers

155 views

[Solved] RadMenu DragNDrop

Hello. I have been using Telerik for a while and i must say i am very impressed. There isn't almost anything that we can't do.
But this time i run into a problem, as i wanted to apply drag and drop in my radmenu and it does not have such implementation. Maybe i am missing something, but is there anyway to implement this?
Thanks in advance,
Bes regards, Rui Silva

Menu

answered on 25 Jan 2011

2 answers

322 views

Fade in/out effects on form controls

hi,

Can i create fade IN/Out effects on all controls available in a rad form.

Like i want a button to appear not at once but to fade in.

Controls don't have an opacity property so i cant loop through that.

Any other way using Telerik.

Thank you!!!

Form

answered on 25 Jan 2011

3 answers

185 views

[Solved] Export to excel using the Fielname and not the Heading Text

Hi,

Is it possible when exporting to excel to use the column's field name instead of the heading text?

In other words, we would like to use a more user friendly heading text for the columns in the grid but when exporting it should use the field name instead. The default behavior is to export using the column's heading text.

Thanks

GridView

answered on 25 Jan 2011

4 answers

818 views

[Solved] PageView Tab Show Hide Problem

Hi,
I am using PageView Control of view mode strip like Tab i want to hide some tabs which is PageviewPage in PageView ,
on check box click event,and also want to hide some tabs first time when page is load.Is there any way to do this.

PageView

answered on 25 Jan 2011

6 answers

722 views

[Solved] Selected cells border color

Hi
My code to change the back color of all the selected cells is working fine but It can not change the border color of all the selected cells of the grid. What I am doing wrong?

Here is my code:

private void dtgCpr_ViewCellFormatting(object sender, CellFormattingEventArgs e)

{

e.CellElement.DrawBorder = true;

if (e.CellElement.IsSelected)

{

e.CellElement.BorderColor = Color.Red;

e.CellElement.BackColor = Color.SeaShell;

}

Thanks

Regards

GridView

answered on 25 Jan 2011

8 answers

297 views

[Solved] How to inprove the performance when the cells value change very fast

hi there

I bind the bindinglist<T> to the gridview. when the every custom object's property value change very ofen ,the corresponding cell's value can change also.But it take too much CPU(around 60%).
I have a custom object inherit from INotifyPropertyChanged.
The custom object have three properties, and every property's value change per 50ms.
I add 30 custom objects to the Bindinglist<T>,and bind the list to radGridview.

I use the 2010 q2 version.

GridView

answered on 25 Jan 2011

5 answers

328 views

Image in a command column

Hi,

I've looked at a few examples of this but they don't appear to work. I'm getting an error when actually assigning the image. The error is Exception has been thrown by the target of an invocation.

The code that I'm trying is:

Private Sub rgvItems_CellFormatting(ByVal sender As Object, ByVal e As CellFormattingEventArgs) Handles rgvItems.CellFormatting

If TypeOf e.CellElement.ColumnInfo Is GridViewCommandColumn AndAlso Not (TypeOf e.CellElement.RowElement Is GridTableHeaderRowElement) Then

Dim column As GridViewCommandColumn = DirectCast(e.CellElement.ColumnInfo, GridViewCommandColumn)

If column.Name = "PLButton" Then

Dim element As RadButtonElement = DirectCast(e.CellElement.Children(0), RadButtonElement)

element.DisplayStyle = Telerik.WinControls.DisplayStyle.Image

' This is an example of course

element.Image = ImageList.Images(0)

'e.CellElement.StringAlignment = StringAlignment.Center

'Me.ApplyThemeToElement(element, "ControlDefault")

End If

End Sub

The line where it seems to fail is element.image = imagelist.images(0). The imagelist is an image list surprisingly enough and it has images in it. They are being used elsewhere to populate an image column in the grid view.

Is there anything obvious stands out?

Thanks

GridView

answered on 25 Jan 2011

3 answers

153 views

[Solved] Deployment Issue

We have included a bunch of Telerik's controls to our windows based application. One of them is Gridview control. While creating a deployment package, we have added all the dlls that are required - one of them is Telerik.Wincontrols.GridView.dll. When we try to install our application on our client's machine, it gives us an error - Unable to load file or reference to Telerik.Wincontrols.Gridview.dll. The dll is physicially present on the machine.
What are we missing here?

GridView

answered on 24 Jan 2011