Setting focus on filter field

[Josh]

If a particular filter operation does not yield any results, we would like to be able to set focus on the last filter field that the user put data into. For example, suppose I have a "Status" column with options of "All","Active","Inactive". If a user picks "Inactive" and there are no records matching that criteria I would like to set focus on the filter control for the "Status" column.

I may just be missing something obvious, but I'm not having luck with this so far.

Thank you!

[Princy]

Hello Josh,

In order to achieve this, store the ColumnUniqueName in a session variable in ItemCommand event. Access the  session variable in PreRender and then set the focus of filter textbox. Hope this helps.

C#:

protected void RadGrid1_ItemCommand(object sender, Telerik.Web.UI.GridCommandEventArgs e)
{
     if (e.CommandName == RadGrid.FilterCommandName)
     {
       Pair filterPair = (Pair)e.CommandArgument;
       Session["filter"] = filterPair.Second.ToString();//storing ColumnUniqueName in session variable
     }
}
protected void RadGrid1_PreRender(object sender, EventArgs e)
{
       int count = RadGrid1.Items.Count;
        if (count==0)
        {
            GridFilteringItem filteringItem = (GridFilteringItem)RadGrid1.MasterTableView.GetItems(GridItemType.FilteringItem)[0];
            string ColumnUniqueName = Session["filter"].ToString();
            TextBox box = filteringItem[ColumnUniqueName ].Controls[0] as TextBox;
          box.Focus();
        }
}

Thanks,
Princy.

[Siward Land]

I would like to do the same thing.  However, is there a way to do it without creating a session?

[Siward Land]

I just changed to session part to use viewstate.  it works.  Thanks.

[Mike]

You can also store it on HttpContext.Current.Items which lasts for the duration of the current page request:

in Grid_ItemCommand:

HttpContext.Current.Items["FilterColumnName"] = filterPair.Second.ToString();

in Grid_PreRender:

string columnUniqueName = HttpContext.Current.Items["FilterColumnName"].ToString();

[tamir]

i had a little modification too so

it filters right away

put the focus on the last filter element 

put the cursor at the end of the fitered text

 protected void RadGrid1_PreRender(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            GridFilteringItem filteringItem = (GridFilteringItem)RadGrid1.MasterTableView.GetItems(GridItemType.FilteringItem)[0];

            string columnUniqueName = HttpContext.Current.Items["FilterColumnName"].ToString();
            if (!string.IsNullOrEmpty(columnUniqueName))
            { 
                TextBox box = filteringItem[columnUniqueName].Controls[0] as TextBox;
                box.Attributes.Add("onFocus", "this.value=this.value"); // setting the cursor to the end of the text !!!
                box.Focus();// focus the filter element
            }
        }
    }​

 

protected void RadGrid1_ItemCommand(object sender, GridCommandEventArgs e)
    {
        if (e.CommandName == RadGrid.FilterCommandName)
        {
            Pair filterPair = (Pair)e.CommandArgument;
            HttpContext.Current.Items["FilterColumnName"] = filterPair.Second.ToString();
        }
    }

 

<telerik:GridBoundColumn DataField="token" FilterControlAltText="Filter token column" HeaderText="token" SortExpression="token" UniqueName="token"
                                                     CurrentFilterFunction="Contains" AutoPostBackOnFilter="false" FilterDelay="1"  ShowFilterIcon="false">​​

[Eyup]

Hi Tamir,

I am attaching a sample RadGrid web site to demonstrate an alternative solution for this case.

Regards,
Eyup
Telerik