3 Answers, 1 is accepted
Could you please paste here the RadComboBox declaration so that we can test your approach at our side and try to find a working solution for you?
Regards,
Nick
the Telerik team
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Rank 2
It is all done in code behind. The rad combo is used as a filter combo for a rad grid. This is based off one of your demos, I just replaced the asp drop down with a rad grid, I needed to be able to change the dropdownlistwidth.
Here is the class I use:
public
class MyCustomFilteringColumn : GridBoundColumn
{
private object listDataSource = null;
int mintWidth = 0;
int mintListWidth = 0;
public int ListWidth
{
get { return mintListWidth; }
set { mintListWidth = value; }
}
public int Width
{
get { return mintWidth; }
set { mintWidth = value; }
}
//RadGrid will call this method when it initializes the controls inside the filtering item cells
protected override void SetupFilterControls(TableCell cell)
{
base.SetupFilterControls(cell);
cell.Controls.RemoveAt(0);
Telerik.Web.UI.
RadComboBox list = new RadComboBox();
//System.Web.UI.WebControls.DropDownList list = new System.Web.UI.WebControls.DropDownList();
list.ID =
"list" + this.DataField.Replace(" ", "_");
list.Height =
Unit.Pixel(250);
list.AutoPostBack =
true;
//list.SelectedIndexChanged += new EventHandler(list_SelectedIndexChanged);
list.SelectedIndexChanged +=
new RadComboBoxSelectedIndexChangedEventHandler(list_SelectedIndexChanged);
cell.Controls.AddAt(0, list);
cell.Controls.RemoveAt(1);
list.DataTextField =
this.DataField;
list.DataValueField =
this.DataField;
list.DataSource =
this.ListDataSource;
list.DataBind();
//list.Font.Size = FontUnit.XXSmall;
list.Style.Add(
"font-size", "0.5em");
list.Font.Name =
"arial";
//if (mintWidth > 0)
//{
list.Width =
Unit.Percentage(97);
//}
list.DropDownWidth =
Unit.Percentage(125);
if (mintListWidth > 0)
{
}
list.Skin =
"Outlook";
}
//void list_SelectedIndexChanged(object sender, EventArgs e)
void list_SelectedIndexChanged(object sender, RadComboBoxSelectedIndexChangedEventArgs e)
{
GridFilteringItem filterItem = (sender as RadComboBox).NamingContainer as GridFilteringItem;
this.SelectedValue = (sender as RadComboBox).SelectedValue;
//GridFilteringItem filterItem = (sender as DropDownList).NamingContainer as GridFilteringItem;
//this.SelectedValue = (sender as DropDownList).SelectedValue;
this.FilteredColumnName = this.UniqueName;
if (this.UniqueName == "Index")
{
//this is example for filtering for integer column type
filterItem.FireCommandEvent(
"Filter", new Pair("EqualTo", this.UniqueName));
}
//filtering for string column type
filterItem.FireCommandEvent(
"Filter", new Pair("Contains", this.UniqueName));
}
public void Rebind()
{
}
public object ListDataSource
{
get
{
return this.listDataSource;
}
set
{
listDataSource =
value;
}
}
public string SelectedValue
{
get
{
object res = this.Owner.OwnerGrid.Page.Session["SelectedValue"];
if (res != null)
{
return (string)res;
}
return "";
}
set
{
this.Owner.OwnerGrid.Page.Session["SelectedValue"] = value;
}
}
public string FilteredColumnName
{
get
{
object res = this.Owner.OwnerGrid.Page.Session["FilteredColumnName"];
if (res != null)
{
return (string)res;
}
return "";
}
set
{
this.Owner.OwnerGrid.Page.Session["FilteredColumnName"] = value;
}
}
//RadGrid will call this method when the value should be set to the filtering input control(s)
protected override void SetCurrentFilterValueToControl(TableCell cell)
{
base.SetCurrentFilterValueToControl(cell);
RadComboBox list = (RadComboBox)cell.Controls[0];
//System.Web.UI.WebControls.DropDownList list = (System.Web.UI.WebControls.DropDownList)cell.Controls[0];
if (this.CurrentFilterValue != string.Empty)
{
list.SelectedValue =
this.CurrentFilterValue;
}
}
//RadGrid will call this method when the filtering value should be extracted from the filtering input control(s)
protected override string GetCurrentFilterValueFromControl(TableCell cell)
{
RadComboBox list = (RadComboBox)cell.Controls[0];
//System.Web.UI.WebControls.DropDownList list = (System.Web.UI.WebControls.DropDownList)cell.Controls[0];
return list.SelectedValue;
}
public override GridColumn Clone()
{
return base.Clone();
}
protected override string GetFilterDataField()
{
return this.DataField;
}
}
I suggest that you try setting the DropDownWidth property in pixels instead of Percentages.
list.DropDownWidth = Unit.Pixel(125); Also, you can try using a different Skin and let us known how this goes.
Regards,
Rosi
the Telerik team
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