[Solved] RadFilter custom controls problem

[michelle]

I can use the sample code to create a drop down for the possible values of a field (i.e. to the right hand side of the greater than or equal to or whatever)

However, I want to put a combo box in the place of the field selector itself (the left hand side of the greater than / equal to)
I can successfully create the combo box, but then it appears in the wrong place (the right hand side).  See the code that does this below.

So I tried putting it at position 0..  In InitializeEditor, instead of this line: 

container.Controls.Add(_combo);

I had:
container.Controls.AddAt(0);

This puts it in the correct place, but then I cannot work out how to add the functionality that ensures that when the user clicks on
a particular entry, the text box appears to the right of the greater than/ equal to section?

I think I have to capture the onselected event from the combo box and then create the appropriate textbox control right?
PLEASE HELP!

RadFilterDropDownEditor dropDownFieldEditor = new RadFilterDropDownEditor();

RadFilter1.FieldEditors.Add(dropDownFieldEditor);

  

DataTable dt = MakeTable();



//create the list of fields to select on
foreach (FilterFieldDTO dtoField in filterOptionList)

{

    DataRow row;

    row = dt.NewRow();

      

    row["FieldName"] = dtoField.FieldName;

    string strFieldName;

    if (row["FieldName"].ToString().LastIndexOf(".") > -1)

    {

        strFieldName = row["FieldName"].ToString().Substring(row["FieldName"].ToString().LastIndexOf(".") + 1);

    }

    else

    {

        strFieldName = row["FieldName"].ToString();

    }

      

    row["FieldName"] = strFieldName;

    

    row["DataValueField"] = strFieldName;

    row["DataTextField"] = strFieldName;

    dt.Rows.Add(row);

 }

  

dropDownFieldEditor.DataTextField = "DataTextField";

dropDownFieldEditor.DataValueField = "DataValueField";

dropDownFieldEditor.FieldName = "FieldName";

  

dropDownFieldEditor.DataSource = dt;

[Mira]

Hello Michelle,

You need to manually add the textbox in the InitializeEditor method. Then,after adding the filter expression on selected index changed of the combo, you need to call explicitly the RecreateControl() method of the RadFilter. RecreateControl will recreate all controls in the custom editor and the TextBoxes may disappear, so you need to create them every time when InitializeEditor is called.

However, please note that this is a custom scenario and it is out of our scope to implement and support it.

Greetings,
Mira
the Telerik team

[Bobby]

container.Controls.AddAt(2, _textbox);

 

 

if (container.Controls.Count > 2)

 

{

container.Controls.RemoveAt(2);

}

 

 

 

RadFilterEqualToFilterExpression<String> expr1 = new RadFilterEqualToFilterExpression<string>(fieldEditor.FieldName);

 

expr1.Value = _textbox.Text;

RadFilterParent.RootGroup.AddExpression(expr1);

　

RadFilterParent.RecreateControl();

//here it gives an exception -  Collection was modified; enumeration operation may not execute



Is there some way to replace the existing control rather than add a new one and remove the other one?
Or is that not the cause of my problem?  Is it because this piece of code is being run more than once per postback?

[Mira]

Hello Bobby,

Our system indicates that you have opened a support ticket concerning the same issue. In order to avoid duplicate posts, I suggest that the communication continues in the support ticket only.

Greetings,
Mira
the Telerik team