Questions on UI for WinForms Forum

2 answers

97 views

Retrieve formatted value from a DateTime column

I am calculating the required width of my columns. The DateTime columns are all coming out too large because the .Value property of the field is the full date and time, even though the column is formatted to be the short date.

How do I get the formatted value of the column?

Thanks -

GridView

answered on 18 Oct 2010

33 answers

654 views

Need urgent help

I am noticing a strange thing with radgridview in CurrentRowChanging event. I have a radgridview without hierarchy, having add new row position at top. The datasource is a dataset and datamember is a datatable.

In current row changing, the following code gives the values for new row just input by using the maximum index, but in another radgridview I get the values by using the index as 0. These 2 codes are as below. Both use the same version of radgridview i.e. Q1 2008 SP1. Can someone please help to explain why this is happening? I would have always expected that behind-the-scenes, a new row ( with rowstate of Added) is being added to a datatable at end of its rows collection, when the CurrentRowChanging event fires.

Thanks
Sunil

CODE 1:

if (e.CurrentRow is GridViewNewRowInfo && this.DataSource != null)

{

DataRowView dataRowView = null;

if (this.Rows.Count >= 1)

{

dataRowView = this.Rows[0].DataBoundItem as DataRowView;

}

CODE 2:

if (e.CurrentRow is GridViewNewRowInfo && attributesRadGridView.DataSource != null)

{

DataRowView dataRowView = null;

if (attributesRadGridView.Rows.Count >= 1)

{

dataRowView = attributesRadGridView.Rows[attributesRadGridView.Rows.Count - 1].DataBoundItem as DataRowView;

}

GridView

answered on 18 Oct 2010

2 answers

229 views

Problem with CheckBox column

Hi,

Can I trigger the "CurrentCellDirtyStateChanged" event like the standard DataGridView ?

A DataSource fills my RadGridView.

I would like to display the total number of rows that are checked in a checkBox Column of my radGridView.

When I check 3 rows on the the WinForm, I only get 2 rows checked. I have to check another one or set the focus on another control to get it.

Thanks for your help!

Fabien

GridView

answered on 18 Oct 2010

9 answers

271 views

ComboBox and Validation

Hello guys,
I have 2 problems:
1. I'm try to use gridViewComboBox, but i got this problem:
- how can I put my item(s) collection without connect throught the database??

2. I try to making a validation for each cells using the cellvalidating events, the problem is, why if I create a new row, the validation doesn't work???
here my codes:

Private Sub TabelBuku_CellValidating(ByVal sender As System.Object, ByVal e As Telerik.WinControls.UI.CellValidatingEventArgs) Handles TabelBuku.CellValidating

Dim kolom = TryCast(e.Column, GridViewDataColumn)

If ((TypeOf e.Row Is GridViewDataRowInfo) AndAlso (kolom IsNot Nothing) AndAlso (kolom.FieldName = "IdBuku")) Then

Dim baris = DirectCast(e.Row, GridViewDataRowInfo)

Dim nilai = DirectCast(e.Value, String)

If (String.IsNullOrEmpty(nilai)) Then

e.Cancel = True

lblKesalahan.BackColor = Color.LightYellow

lblKesalahan.ForeColor = Color.Red

lblKesalahan.Text = "ID Buku Harus Diisi!!"

baris.ErrorText = "ID Buku Harus Diisi!!"

Else

baris.ErrorText = String.Empty

lblKesalahan.BackColor = Color.Transparent

lblKesalahan.ForeColor = Color.LimeGreen

lblKesalahan.Text = "EDITOR DATA BUKU"

End If

End Sub

GridView

answered on 18 Oct 2010

12 answers

201 views

Needing Critical Help.

Hi all,
I've used a RadGridView in my C# app on a form. At runtime when the user leaves a cell empty Default message provided by the RadGridView appears. First, I want to replace my own message with that message and second how do I must handle such runtime errors:
1. Leaving a newly-added empty row by the user which causes to generate a runtime error.
2. Leaving a cell empty.
3. Accessing the content of a cell for some checkings like Length of the value or something else.
4. When the old value removed by the user I want to showing it again in cases which user don't provide a valid Content.

Thank you very much, Tooraj Azizi.

GridView

answered on 18 Oct 2010

3 answers

138 views

how do I change font size caption of panelbar

i need to change font size and color of caption how do i change it
thank you

Panelbar (obsolete as of Q2 2010)

answered on 17 Oct 2010

1 answer

74 views

Are there is event that happen when the content in Data Source changes?

Thank you.

GridView

answered on 17 Oct 2010

3 answers

146 views

Winforms Update to Q2 2010 SP2

After Upgrade VS 10 told me about duplicate assemblys, one in GAC and others in c:\Users\Roaming\blabla...
VS Forms Designer was freezed, and so on...

i'm sure i messed it up myself but no idea when. Maybe it was a bad idea to copy some telerik assemblys to the bin folder
of my project (for simple later xcopy deployment).

what's best practices for update, should i uninstall and reinstall outside visual studio
or is it save/same functionality to use upgrade wizard inside VS.

(I use the upgrade wizard for asp.net ajax about more than a year now and havent had ever any issues)

General Discussions

answered on 16 Oct 2010

6 answers

217 views

AutoSizeRows problem

One of the columns in our grid has wrapped text. So we set AutoSizeRows = True so that the row height automatically resizes to fit the multiple lines as needed.

However, this causes another problem when adding new lines. When the user clicks our Add button and we add a row to the grid, the row is only a few pixels tall. The user cannot enter data because the row is way too small.

We tried hard-coding in a height for the row after adding the row, and this works temporarily. But if the user wants to add four rows only the last row retains its height.

Is there some way to set a minimum or default row size so we can leave AutoSizeRows set to try and still have an Add feature?

Thanks!

GridView

answered on 16 Oct 2010

4 answers

86 views

Need some help with older version.

I have inherited a project that was started with an older version of RadControls for WinForms and naturally i am getting all kinds of errors trying to get it up to par with current. Specifically i need to know the last version that had RadGridView.TableElement and GridViewCellInfo.Tag. I would like to at least get this project up and going and then migrate to newer components.

Thanks in advace,

Clay Hall

GridView

answered on 15 Oct 2010