Questions on UI for WinForms Forum

2 answers

262 views

giving permissions to different users in winforms

I am creating windows application with C# that requires to work with 2-3 users.The admin user should get
all the rights to access all forms and can do activity such as retreive data,insert, update and delete.wherein other
users should not get all the access.how do I disable controls that r updating data in database for other users.
can anyone brief me on this?
thanks in advance

General Discussions

answered on 01 Aug 2011

1 answer

420 views

Gridview validation and error marking/coloring

hi, i have looked at the other posts regarding validation and your validation video. i do understand the row_validation and cell_validation events. However, in order to validate the entries AND mark the errors, i have to use the validation code twice which i dont want to do.

My test code is shown below. Have also attached a screenshot.

Here's what i am trying to do:

in the grid2_RowValidating event i am validating and preventing user to go to next row. i would like to "mark/color" the cell with the error. I tried all the Style properties but only the forecolor works. (i have commented the lines not working)

So, in addition to RowValidating event, i decided to use the grid2_ViewCellFormatting event to validate and color the cell with the error.
This is working but i dont understand why i have to validate twice. (once in the RowValidating event to prevent them to go to the next row and again in the ViewCellFormatting event to "color" the cell)

Am i doing something wrong? Why am i not able to set the Style Properties directly from within the RowValidating. I am using the Q2 2011 version (latest)

Private Sub grid2_RowValidating(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.RowValidatingEventArgs) Handles grid2.RowValidating

If TypeOf e.Row Is GridViewNewRowInfo Or TypeOf e.Row Is GridViewDataRowInfo Then

If Not e.Row Is Nothing Then

Dim value As String = e.Row.Cells(1).Value

If value > 10 Then

e.Cancel = True

e.Row.Cells(1).ErrorText = "cannot be greater than 10"

e.Row.ErrorText = "cannot be greater than 10"

e.Row.Cells(1).Style.ForeColor = Color.Red

'These did not work so had to use the cell formating

'e.Row.Cells(1).Style.DrawFill = True

'e.Row.Cells(1).Style.NumberOfColors = 1

'e.Row.Cells(1).Style.BackColor = Color.Peru

'e.Row.Cells(1).Style.DrawBorder = True

'e.Row.Cells(1).Style.BorderWidth = 2

Else

e.Row.ErrorText = String.Empty

End If

End Sub

Private Sub grid2_ViewCellFormatting(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.CellFormattingEventArgs) Handles grid2.ViewCellFormatting

If grid2.IsInEditMode Then

If TypeOf e.Row Is GridViewRowInfo Then

Select Case e.ColumnIndex

Case 1

e.CellElement.DrawFill = True

e.CellElement.NumberOfColors = 1

'validate again?? to set the coloring?

If e.CellElement.Value > 10 Then

'set visual clue

e.CellElement.BackColor = Color.Peru

e.CellElement.ForeColor = Color.Yellow

e.CellElement.Image = My.Resources._error

Else

'reset all

e.CellElement.BackColor = Color.White

e.CellElement.ForeColor = Color.Black

e.CellElement.Image = Nothing

End If

End Select

End If

End Sub

GridView

answered on 01 Aug 2011

5 answers

265 views

Multiselect DropDownList Retreive selected items

I'm currently using a multiselect enabled dropdownlist. How do I retreive the list of 'selected' items in the multiselect dropdownlist?

Thanks.

DropDownList

answered on 01 Aug 2011

1 answer

78 views

Looking for delayed hide of menu

I'm new to Telerik controls so I'm hopeful there maybe a solution to my problem but searching the documentation and forums I have yet to see it.

Problem
A typical usability problem with menus I frequently see is a menu or sub-menu (grouping of menu items beneath another menu) that instantly disappears if the user mouses over the wrong pixel while trying to mouse over to the menu item. This can be frustrating causing the user to have to retrace their steps to once again reveal the menu and this time carefully tip-toe the mouse back through the narrow parameters allowed them so as not to trip the code just waiting to remove their destination.

Solution
This is a fairly simple problem technically which requires the library author to allow from some time delay before hiding the menu. The logic would go something like (pseudo code):

OnMouseOverNonMenu
Start Timer

OnMouseOverMenu
Stop Timer

OnTimerElapsed
Hide menu

Summary
So far, I have not seen this solution being build into the Telerik menu though it seems like a perfect place for this solution. Did I miss it? Is there a way to do this without me rolling my own menu control?

thanks,
Eric

Menu

answered on 01 Aug 2011

3 answers

143 views

ExplorerBar Sorting

Hi,

I'm just switching the last Controls from PanelBar to PageView. In some case I'm using the ExplorerBar-View. But why are newest Elements on Top? I'm adding the Pages programmatically and it adds the Pages always on top. How can I avoid this?

And: how can I change the position of programmatically added Controls? All new controls appears in the upper left corner.

Thank you!
Andy

PageView

answered on 01 Aug 2011

2 answers

189 views

Row color animation

I'm trying to figure out how to have a row change color and then fade back to its original color after some predetermined amount of time (like 1 second). I found this example online but can't make it fit for my situation.

http://www.telerik.com/support/kb/winforms/buttons/create-button-with-animated-border.aspx

Any input in the matter would be appreciated.

Why I'm trying to do this (in case you're interested):
I have a piece of hardware that is scanning items that are represented on the screen in the grid. As the scanner picks up an item, I'd like it to "flash" to show the user that the scanner sees it.

Thanks,
Jason

GridView

answered on 29 Jul 2011

2 answers

83 views

Scrollbar and no multiple visible pages

Hi,

I'm migrating from the obsolete PanelBar Control and need a Scrollbar like in ExplorerBar mode, but with just one open Page. I can't find any Method to programatically expand or collapse Pages.

Andy suggestion?

Thanks
Andy

PageView

answered on 29 Jul 2011

5 answers

106 views

Temp Key File after updating to 2011.2.11.72

I updated to the today to 2011.2.11.72 and my Solution Explorer is now showing a temporary key file called testenv1_TemporaryKey.pfx. Do I have to be concerned - how is that changed.
Karl

Visual Studio Extensions

answered on 29 Jul 2011

1 answer

187 views

Problem with horizontal scroll bar in radListControl

Hi. I have WinForm Q1 2011.
I have a RadListControl and I fill it from a table in a database,
when a item is to large, dont appears the horizontal scroll bar.
however, if I put a long row from the design view, the horizontal scrollbar is added.
I have tried several things but nothing works, I hope your answer thanks.





lstAreasDisponibles

(listControl) properties :

autoscroll = true
fitItemSize = false
AutoSizeItems = true

This function fills the listControl.

private void cargarDatosListAreaDisponible()

{

string query = "SELECT Vista_Cat_Adscripcion_SIRH.Indice, Vista_Cat_Adscripcion_SIRH.Nombre " +

"FROM Vista_Cat_Adscripcion_SIRH INNER JOIN " +

" Vehiculos ON Vista_Cat_Adscripcion_SIRH.Indice = Vehiculos.IdArea " +

"GROUP BY Vista_Cat_Adscripcion_SIRH.Indice, Vista_Cat_Adscripcion_SIRH.Nombre, " +

" Vehiculos.Status " +

"HAVING Vehiculos.Status = '1' "+

"ORDER BY Vista_Cat_Adscripcion_SIRH.Nombre";

Query obj = new Query();

DataTable dt = obj.obtenerSelect(query);

string[,] datos = new string[dt.Rows.Count, dt.Columns.Count];

for (int fila = 0; fila < dt.Rows.Count; fila++)

{

RadListDataItem rldi = new RadListDataItem();

rldi.TextWrap = true;

rldi.Text = dt.Rows[fila][1].ToString();

lstAreasDisponibles.Items.Add(rldi);

}

ListControl

answered on 29 Jul 2011

0 answers

81 views

RadGridView Width issue

hello

Iam using a RadGridView in my WPF project which has only one column when the width of the column is set to " * " the grids width exceeds the containers width this causes the Container to be streched. but if the * is removed the grid is not getting filled inside the container

Thanks
Jagan

GridView

asked on 29 Jul 2011