How to implement initial data load in RadGrid after applying filter.

[Timofey]

Hello! I have RadGrid with no records, and column with filter template. In filter template i have RadTextBox.
User must enter value in RadTextBox, press enter and then on server-side there is a search request with paramenter, wich is value in RadTextBox. So i have problems implementing this functionality. Here is my markup for column in RadGrid:

<telerik:GridBoundColumn DataField="FullName" UniqueName="FullNameColumn" HeaderText="Имя"
                        ReadOnly="true" CurrentFilterFunction="Contains" AllowFiltering="true"
                        ShowFilterIcon="false" FilterControlWidth="200px">
                        <FilterTemplate>
                            <telerik:RadTextBox runat="server" AutoPostBack="true" ID="NameRadTextBox" ClientIDMode="Static" EmptyMessage="Введите ФИО" ClientEvents-OnKeyPress="btnClick"/>
                            <telerik:RadCodeBlock ID="rcb1" runat="server">
                                    <script type="text/javascript">
                                        function btnClick(sender, e) {
                                            if (e.get_keyCode() == 13) {
                                                $find("<%= RadAjaxManager.ClientID %>").ajaxRequest();
                                            }
                                        }
                                    </script>
                                </telerik:RadCodeBlock>
                        </FilterTemplate>
                    </telerik:GridBoundColumn>

Subscribing on event:

<telerik:RadAjaxManager ID="RadAjaxManager" runat="server" OnAjaxRequest="RadAjaxManager_AjaxRequest">
.....

 On server-side i have handler for RadAjaxManager_AjaxRequest:

protected void RadAjaxManager_AjaxRequest(object sender, AjaxRequestEventArgs e)
        {

                var results = new List<CompanyUser>();
                var searchStr = e.Argument;
                var users = _userProvider.SearchByName(searchStr);
                UsersList.DataSource = users;
                UsersList.DataBind();

        }

But nothing happens. Grid is still empty. I checked recieved data from
 database and it's ok. What is missed or what i'm doing wrong? 

[Tsvetina]

Hi Timofey,

Since you do not pass any argument in the ajaxRequest() method, e.Argument does not contain a value, therefore, no results are returned.
You would need to pass the value from the text box in the ajaxRequest() method call in order for filtering to work.

Regards,
Tsvetina
the Telerik team