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Remove filtered text from the filter taxbox column

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Jignesh
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Jignesh asked on 10 May 2010, 12:46 PM
Hello Friends,

I used new radgrid with dynamic column with custom pagging.
In my list display column which contain Int, Datetime value.I also applied filtering on all the textbox.
I check validation on server side , radgrid ItemCommand Event.
When some one will enter text on Int column than i will display Error message using the radalert on server side.
after message is displyed i need to blank on filter textbox.

How i will do blank filtered textbox?

i have tried below code but its  not working.

dg.MasterTableView.FilterExpression = String.Empty



Thanks & Regards
Jignesh Patel

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Princy
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answered on 10 May 2010, 02:09 PM
Hi Jignesh,

 Try the following code snippet in order to clear the filters as described in the Demo.

      
       
foreach (GridColumn column in RadGrid1.MasterTableView.Columns)  
        {  
            column.CurrentFilterFunction = GridKnownFunction.NoFilter;  
            column.CurrentFilterValue = string.Empty;  
  
        }  
        RadGrid1.MasterTableView.FilterExpression = string.Empty;  
        RadGrid1.MasterTableView.Rebind();  


Regards,
Princy.
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Jignesh
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answered on 11 May 2010, 06:26 AM
Thanks Princy,

For quick reply.

I had tried it but its not working.

My requirement is suppose we will display 5 column in grid.
(1) Id : int
(2) Created Date : DateTime
(3) Name : Varchar
(4) Expiration Date : DateTime
(5) Address : Varchar

suppose user will enter int value on Id column and apply filter than record will be diplay as per filteration. now again user will enter text into Created Date column an apply filter than i need to saw message in rad alert "Enter valid date". and blank text on Filter Created Date column, also Id filter column text should be as it is.
I need error message on ItemCommand Event.

Thanks & Regards
Jignesh Patel


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Shinu
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answered on 14 May 2010, 12:17 PM
Hello Jignesh,

One suggestion to achieve this functionality is by accessing the DatePicker in FilterItem and attaching the 'OnError' client event to show radalert. Check out the following code and see whether it helps you.

C#:
protected void RadGrid1_ItemCreated(object sender, GridItemEventArgs e) 
    { 
        if (e.Item is GridFilteringItem) 
        { 
           RadDatePicker pick = new RadDatePicker(); 
           GridFilteringItem filteritem = (GridFilteringItem)e.Item; 
           RadDatePicker dtpick = (RadDatePicker)filteritem["CreatedDate"].Controls[0]; 
           dtpick.DateInput.ClientEvents.OnError = "OnError"
        } 
   } 

Java Script:
<script type="text/javascript"
 function OnError(sender, args) 
    { 
        radalert("Enter valid date"); 
        var dtpicker = sender; 
        dtpicker.clear(); 
    }  
</script> 



Regards,
Shinu.


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Jignesh
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answered on 19 May 2010, 10:44 AM
Hello Shinu

Thanks for your help.

But i need a solution like when i enter the text value in Id (Datatype : int ) column than it gives rad alert message "Enter numeric value" at a time that text value in column should be blank.

So how i will do for blank a value in column when i enter wrong value in a column?

Please help me.

Thanks & Regards
Jignesh Patel

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Shinu
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answered on 19 May 2010, 12:31 PM
Hello Jignesh,

You can access the textbox in filteritem and attach the OnKeyPress event to check whether typed a letter or not, and if so cancel the event and show an alert as shown below.

C#:
 
 protected
 void RadGrid1_ItemCreated(object sender, GridItemEventArgs e) 
    { 
        if (e.Item is GridFilteringItem) 
        { 
           GridFilteringItem filteritem = (GridFilteringItem)e.Item; 
           TextBox textbox = (TextBox)filteritem["ID"].Controls[0]; 
           textbox.Attributes.Add("onkeypress","checkChar(this, event)"); 
        } 
   } 

Java Script:
<script type="text/javascript"
function checkChar(textbox, e) { 
        if ((e.keyCode >= 97 && e.keyCode <= 122) || (e.keyCode >= 65 && e.keyCode <= 90)) { 
            radalert("Enter numeric value"); 
            e.cancel = true
            try { 
                e.returnValue = false
                e.cancelBubble = true
                if (document.all) { //IE   
                    e.keyCode = 0; 
                } 
                else { //NS   
                    e.preventDefault(); 
                    e.stopPropagation(); 
                } 
            } 
            catch (ex) { 
            } 
           } 
     } 
 </script> 
 

Regards,
Shinu.






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Jignesh
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answered on 19 May 2010, 06:38 PM
Hello Shinu

Thanks for quick reply.

your code is help ful but i need a validation and clear wrong value from the column.in your case suppose we copy and paste value in textbox than its not working.

i have some code its working fine for me. but i have one page in that i need to blank a column filtered value. other wise below code is working for display validation message.

 Protected Sub test_ItemCommand(ByVal source As Object, ByVal e As Telerik.Web.UI.GridCommandEventArgs) Handles test.ItemCommand
        If e.CommandName = "Filter" Then
            Dim filterPair As Pair = DirectCast(e.CommandArgument, Pair)
            Dim filterOption As String = CType(e.CommandArgument, Pair).First
            Dim filterPtrSaved As String = (DirectCast((TryCast(e.Item, GridFilteringItem))(filterPair.Second.ToString()).Controls(0), TextBox)).Text

            Dim dcolumn As GridBoundColumn = Nothing
            If e.CommandArgument.GetType.Name = "Pair" Then
                dcolumn = CType(e.Item.OwnerTableView.GetColumnSafe(CType(e.CommandArgument, Pair).Second), GridBoundColumn)
            End If

            flgDispayError = True
            If dcolumn.DataTypeName = "System.Decimal" Or dcolumn.DataTypeName = "System.Int32" Then
                Dim num As Double
                Dim isNumber As Boolean = Double.TryParse(filterPtrSaved, num)
                If Not isNumber And filterOption <> "NoFilter" Then
                    RadAjaxManager1.ResponseScripts.Add("radalert('Please enter numeric data', 250, 125,'dotStaff');")
                    flgDispayError = False
                End If
            End If

            If (Not filterOption = "IsNull" AndAlso Not filterOption = "NotIsNull" AndAlso Not filterOption = "NoFilter") AndAlso (dcolumn.DataTypeName = "System.DateTime") Then
                Dim dFilterDate As DateTime
                Dim dateStrings As String() = filterPtrSaved.Split(" ")
                Dim isDate As Boolean = DateTime.TryParse(dateStrings(0), dFilterDate)
                If Not isDate Then
                    RadAjaxManager1.ResponseScripts.Add("radalert('Please enter valid date.', 250, 125,'dotStaff');")
                    flgDispayError = False
                End If
                If flgDispayError AndAlso dateStrings.Length > 1 Then
                    isDate = DateTime.TryParse(dateStrings(1), dFilterDate)
                    If Not isDate Then
                        RadAjaxManager1.ResponseScripts.Add("radalert('Please enter valid date.', 250, 125,'dotStaff');")
                        flgDispayError = False
                    End If
                End If
            End If
        End If
    End Sub

please help me how i will do from the code behind?

Thanks
Jignesh Patel

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Jignesh
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Princy
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Jignesh
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Shinu
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