The control DataSource(or DataSourceID) is not set.

[Jérémy]

Hi,

 I try to Bind an RadAutoCompleteBox with a Dictionnary, but I have this error message when the page i​s loaded and I tap a letter into the RadAutoCompleteBox => "The control DataSource(or DataSourceID) is not set."

 

I try the following code :

ASCX :

<telerik:RadAutoCompleteBox runat="server" ID="RadAutoCompleteBox1" InputType="Text" Width="200" DropDownWidth="150px"></telerik:RadAutoCompleteBox>

 

ASCX.CS

01.protected void Page_Load(object sender, EventArgs e)
02.{
03. if (!Page.IsPostBack)
04.  {
05.   Dictionary<int, string> dict = new Dictionary<int, string>();
06.   dict.Add(1, "Ann");
07.   dict.Add(2, "John");
08.   dict.Add(3, "Mary");
09.   RadAutoCompleteBox1.DataSource = dict;
10.   RadAutoCompleteBox1.DataTextField = "Value";
11.   RadAutoCompleteBox1.DataValueField = "Key";
12. }
13.}

 

Thanks for helping me

[Jérémy]

Or maybe it's possible to bind it with a RadMenu ? or a List<RadMenuItem> ?

Thanks for helping me

[Aneliya Petkova]

Hi vallin,

You should bind the RadAutoCompleteBox control on Page_Load and the DataBind method must be called after setting the DataSource property:

protected void Page_Load(object sender, EventArgs e)
{
    Dictionary<int, string> dict = new Dictionary<int, string>();

    dict.Add(1, "Ann");

    dict.Add(2, "John");

    dict.Add(3, "Mary");

    RadAutoCompleteBox1.DataSource = dict;

    RadAutoCompleteBox1.DataTextField = "Value";

    RadAutoCompleteBox1.DataValueField = "Key";

    RadAutoCompleteBox1.DataBind();

}

Attached you may a project I made for testing using the code you sent.

Please check our help articles for more information on DataBindings:
http://docs.telerik.com/devtools/aspnet-ajax/controls/autocompletebox/data-binding/overview

Regards,
Aneliya Petkova
Telerik

[Jérémy]

Hi,

Thanks, I totally forgot it ^^"

Could you explain me something ? When I do this :

protected void Page_Load(object sender, EventArgs e)
{
  if (!Page.IsPostBack)
  {​
    //Dictionnary, datasource, databind of RadAutoCompleteBox ...
  }
}

I have the error message, but when I do this :

protected void Page_Load(object sender, EventArgs e)
{
  if (!Page.IsPostBack)
  {​
    //...
  }

  //Dictionnary, datasource, databind of RadAutoCompleteBox ...
}

It works ....

Could you explain me that ?

 

Thanks by the way !

[Aneliya Petkova]

Hi vallin,

I am glad that I was helpful.

The RadAutoCompleteBox control should be bound on Page_Load, because every time when a user starts typing into the input area, the control is doing a post request to the server and returns the filtered data-source against the typed text.

Regards,
Aneliya Petkova
Telerik

[Jérémy]

Thank for your help and this explaination.
Have a good day!

[Jérémy]

Hi again !

I finaly use a DropDownItemTemplate

<DropDownItemTemplate>
            <table cellpadding="0" cellspacing="0">
                <tr>
                    <td>
                        <%# DataBinder.Eval(Container.DataItem, "Text")%>
                        <img style="vertical-align:middle" src="icon_pin.png" Title="<%# DataBinder.Eval(Container.DataItem, "Attributes['Chemin']")%>" Alt="?"/>
                    </td>
                </tr>
                <tr>
                    <td style="font-style:italic">
                        <%# DataBinder.Eval(Container.DataItem, "Attributes['IdNiveau']")%>
                    </td>
                </tr>
            </table>
        </DropDownItemTemplate>

 And I wanna know how get the "DropDownItemTemplate" when user select an item ?

I try with the "AutoCompleteEntryEventArgs" but I have just access to "Text" and​ "Value", I want access to "Attributes['IdNiveau']"

Regards

[Aneliya Petkova]

Hi vallin,

In order to keep threads short and concise, I would suggest you to open a separate thread for your last question.

Thank you in advance for your understanding and cooperation.

Regards,
Aneliya Petkova
Telerik