Questions on UI for WinForms Forum

3 answers

348 views

Hi,
     I have a rad gridview windows control with a GridViewTextBoxColumn and a GridViewCheckBoxColumn. AllowAddNewRow is set to "True" for the Gridview. I have written code in DefaultValuesNeeded event to set the check box selected. I need to validate data in the current editing row before the focus moves to a new row or some other row. I have written code in CurrentRowChanging event to validate the data but the cell value is always null.

private void radGridView1_CurrentRowChanging(object sender, CurrentRowChangingEventArgs e)

        {

            if (e.CurrentRow == null) return;

            radGridView1.Invalidate();

            var val = Convert.ToString(e.CurrentRow.Cells["column1"].Value);

            if (val == "test")

            {

                MessageBox.Show("Invalid data");

                e.Cancel = true;

            }

        }

In which event should i write the code.

Regards
Shamjith

GridView

answered on 21 Dec 2009

3 answers

161 views

Do not dropdown on button click (DropDownButton)

Hi there!

I´d need to do some action when I click on a DropDownButton (not the arrow) and I do not want that de DropDownButton shows its menu.

How can I get this result?

Regards

Darío K

Buttons, RadioButton, CheckBox, etc

answered on 21 Dec 2009

1 answer

225 views

TextBox Does Not Fire Events!

Hi All,

I have created a class which inherits from RADTextBox and override the OnKeyPress() method.

public class RegExpRadTextBox : RadTextBox
{
string _keyRegExp;
public string KeyRegExp
{
get { return this._keyRegExp; }
set { this._keyRegExp = value; }
}

protected override void OnKeyPress(KeyPressEventArgs e)
{
if (!string.IsNullOrEmpty(this._keyRegExp))
{
if (!Regex.IsMatch(e.KeyChar.ToString(), this._keyRegExp))
{
e.Handled = true;
}
}

base.OnKeyPress(e);
}
}

But when i type some text, nothing happens (Keypress Event Firing/Raised).

(Keydown is also doesnt work.)

What should i do?

Thanks.

TextBox

answered on 21 Dec 2009

0 answers

107 views

Error with vertical scroll bar in hierarchy view.

Hi,
I am getting 'Index was outside the bounds of the array.' exception when i try to use the vertical scroll bar of last tab in my child grid and then click on some other tab. why is this happening ??

GridView

asked on 21 Dec 2009

1 answer

98 views

AfterCollapse' and 'NodeCollapsed' events missing?

I am hoping someone replies to this post during the weekend.

The documentation for Q3 2009 says that 'AfterCollapse' is a public event of RadTreeView, and also it says to use 'NodeCollapsed' event instead of 'AfterCollapse'.

I found that neither 'AfterCollapse' nor 'NodeCollapsed' appear as public events in Visual Studio, even though both these events are documented as 'Public' events in the documentation of RadTreeView in Q3 2009.

Anyone noticed this strange inconsistency with latest 'RadTreeView'? Is there any simple or complex alternative solution for these missing events or a simple upgrade path for this scenario?

Treeview

answered on 19 Dec 2009

1 answer

175 views

Handling Input Errors in Gridview Filter Row

I have a gridview (v2.0.50727) with filter row enabled. Some of the gridview columns have integer datatype. When a string is entered instead of integer an exception is being thrown for understandable reason. My question is where do I handle the input validation? (What event do I subscribe, etc).

Also is it possible to have a dropdown list in the filter row for some of the columns? One of the columns in my grid is a foreign key column and is being populated with string representation of the value. Please refer to an example if possible. I have searched the forums and found posts that said in future versions of gridview this should be possible, is it possible now?

GridView

answered on 19 Dec 2009

1 answer

112 views

Using Different List Box Item Classes During RadListBox Binding

I am binding a list to the RadListBox but I want to use a custom RadListBoxItem for the items in the list. How is this accomplished during binding?

ComboBox and ListBox (obsolete as of Q2 2010)

answered on 18 Dec 2009

2 answers

187 views

How do I set AutoSizeDropDownToBestFit in a GridView MultiColumnCB?

Hi,

I have added a new column of type GridViewMultiColumnComboBoxColumn to a GridView, but when I run the application I have this issue thats on this link:
http://img96.imageshack.us/i/image01g.jpg/
which I can't solve by my self. So how do I set autoSizeDropDownToBestFit like on the MultiColumnComboBox object? or something like that.

Regards,
Hugo Ruivo

GridView

answered on 18 Dec 2009

1 answer

168 views

Performance

Hello,

we use Telerik in our Company. We use a lot of GridViews and here are my Questions:

1. What is the best and fastest way to bind data to a datasource. We use lists for binding. Are datasets or arrays faster? Should i use   binding sources or do they cost time?

2. I have a hierachal GridView. I dont aant to work with datasets. I work with Objects.
    I have a class for example City with some properties and a nested list of people objects.

    Now my solution is to make an relation between thos two. Each people Object has an ID of its city.

    But to bind that i have to make a new list which has alle people from all cities and then i can bind it.

    But i would like to bind it without makin the new list.

    I wolud have it like the childgrid binds to the list of people in the city.

    gridView.datasource = List<City>
    gridView.Template...[0].DataSource = here I would like to have exactlöy the nested list in city but i have a list of alle people from all cities?

How can I solve that?
Thanx Thomas

GridView

answered on 18 Dec 2009

5 answers

275 views

RadApplicationMenu orientation

Is there any way to get the menu of the application menu to open horizontally to the right instead of vertically? I tried setting the DropDownDirection to Right, but that doesn't seem to do anything.

ApplicationMenu

answered on 17 Dec 2009