7 Answers, 1 is accepted
0

Emanuel Varga
Top achievements
Rank 1
answered on 19 Jan 2011, 09:18 AM
Hello Somnath,
Just use the CellEditorInitialized event and use MaxDropDownItems to set the maximum number of items to display in the dropdown.
Hope this helps, if you have any other questions or comments, please let me know,
Best Regards,
Emanuel Varga
Telerik WinForms MVP
Just use the CellEditorInitialized event and use MaxDropDownItems to set the maximum number of items to display in the dropdown.
void
radGridView1_CellEditorInitialized(
object
sender, GridViewCellEventArgs e)
{
var editor = e.ActiveEditor
as
RadDropDownListEditor;
if
(editor ==
null
)
{
return
;
}
var editorElement = editor.EditorElement
as
RadDropDownListEditorElement;
editorElement.MaxDropDownItems = 4;
}
Hope this helps, if you have any other questions or comments, please let me know,
Best Regards,
Emanuel Varga
Telerik WinForms MVP
0

Somnath
Top achievements
Rank 1
answered on 19 Jan 2011, 11:14 AM
Hi Emanuel,
Thanks for your support....
But this code does not give any kind of change in my application.....
I am waiting for your responce..
Thanks,
Thanks for your support....
But this code does not give any kind of change in my application.....
I am waiting for your responce..
Thanks,
0

Emanuel Varga
Top achievements
Rank 1
answered on 19 Jan 2011, 11:17 AM
Hello again Somnath,
Please take a look at the following example:
Please try using the newer property DefaultItemsCountInDropDown, i found that in some cases the value of the MaxDropDownItems is being overwritten by this one.
Hope this helps, if you have any other questions or comments, please let me know,
Best Regards,
Emanuel Varga
Telerik WinForms MVP
Please take a look at the following example:
using
System;
using
System.Collections.Generic;
using
System.Windows.Forms;
using
Telerik.WinControls.UI;
public
partial
class
Form1 : Form
{
private
RadGridView radGridView1;
public
Form1()
{
InitializeComponent();
this
.Controls.Add(radGridView1 =
new
RadGridView());
radGridView1.Dock = DockStyle.Fill;
radGridView1.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill;
radGridView1.CellEditorInitialized +=
new
GridViewCellEventHandler(radGridView1_CellEditorInitialized);
radGridView1.DataSource =
new
List<Test> {
new
Test(1,
"Name1"
),
new
Test(2,
"Name2"
) };
var column =
new
GridViewComboBoxColumn(
"TestCombo"
);
column.DataSource =
new
List<
string
> {
"Name1"
,
"Name2"
,
"Name3"
,
"Name4"
,
"Name5"
,
"Name6"
,
"Name7"
};
radGridView1.Columns.Add(column);
}
void
radGridView1_CellEditorInitialized(
object
sender, GridViewCellEventArgs e)
{
var editor = e.ActiveEditor
as
RadDropDownListEditor;
if
(editor ==
null
)
{
return
;
}
var editorElement = editor.EditorElement
as
RadDropDownListEditorElement;
//you can use either
//editorElement.MaxDropDownItems = 6;
//or the newer property
editorElement.DefaultItemsCountInDropDown = 6;
}
}
public
class
Test
{
public
int
Id {
get
;
set
; }
public
string
Name {
get
;
set
; }
public
Test(
int
id,
string
name)
{
this
.Id = id;
this
.Name = name;
}
}
Please try using the newer property DefaultItemsCountInDropDown, i found that in some cases the value of the MaxDropDownItems is being overwritten by this one.
Hope this helps, if you have any other questions or comments, please let me know,
Best Regards,
Emanuel Varga
Telerik WinForms MVP
0

Richard Slade
Top achievements
Rank 2
answered on 19 Jan 2011, 11:22 AM
Hi Guys,
If you need to change the size of the drop down then you could use the following inside the CellEditorInitialized
Hope that helps
Richard
If you need to change the size of the drop down then you could use the following inside the CellEditorInitialized
var editor = e.ActiveEditor
as
RadDropDownListEditor;
if
(editor ==
null
)
{
return
;
}
var editorElement = editor.EditorElement
as
RadDropDownListEditorElement;
editorElement.DropDownMinSize =
new
Size(0,300);
Hope that helps
Richard
0

Somnath
Top achievements
Rank 1
answered on 19 Jan 2011, 11:57 AM
Hello Emanuel,
Thanks for reply,
editorElement.DefaultItemsCountInDropDown = 6;
Yours code working here, since I want itms list up to 25
Thanks for reply,
editorElement.DefaultItemsCountInDropDown = 6;
Yours code working here, since I want itms list up to 25
but problem is that DefaultItemsCountInDropDown property
does not take more than 8 items..
Thanks
0
Accepted

Richard Slade
Top achievements
Rank 2
answered on 19 Jan 2011, 12:04 PM
Hello,
There are two properties that manage the number of items in drop down portion of the RadDropDownList.
If number of items is greater than DefaultItemsCountInDropDown, it restricts the number of items to DefaultItemsCountInDropDown.
The second property MaxDropDownItems is used for backward compability with the old RadComboBox and also restricts the number of items to MaxDropDownItems. DefaultItemsCountInDropDown cannot be greater than the MaxDropDownItems.
Please refer to the code snippet below which demonstrates how RadDropDownList calculates the number of items:
As DefaultItemsCountInDropDown cannot be greater than MaxDropDownItems you also need to check/set that property in this case.
Hope that helps
Richard
There are two properties that manage the number of items in drop down portion of the RadDropDownList.
If number of items is greater than DefaultItemsCountInDropDown, it restricts the number of items to DefaultItemsCountInDropDown.
The second property MaxDropDownItems is used for backward compability with the old RadComboBox and also restricts the number of items to MaxDropDownItems. DefaultItemsCountInDropDown cannot be greater than the MaxDropDownItems.
Please refer to the code snippet below which demonstrates how RadDropDownList calculates the number of items:
int
itemsCount =
this
.listElement.Items.Count;
if
(itemsCount > defaultItemsCountInDropDown || itemsCount == 0)
{
itemsCount = defaultItemsCountInDropDown;
}
if
(itemsCount >
this
.maxDropDownItems)
{
itemsCount =
this
.maxDropDownItems;
}
As DefaultItemsCountInDropDown cannot be greater than MaxDropDownItems you also need to check/set that property in this case.
Hope that helps
Richard
0

Somnath
Top achievements
Rank 1
answered on 19 Jan 2011, 12:15 PM
Hello Richard,
Thanks... This code help me to solve my problem...
Thanks... This code help me to solve my problem...