Search as you type Demo Problem

[Ludovic Gerbault]

Hello

I've tried to implement the functionnality presented in the demo "Search as you type"

It usually works fine except in one case.
If there is in the grid a GridViewImageColumn for instance, the whole thing just crash because of a cast exception between GridViewDataColumn and GridViewImageColumn.

If you change it GridViewColumn, the CreateFilterMethod doesn't work, and if you try to select only the GridViewDataColumn from the RadGrid, ignoring the GridViewImageColumn, then nothing happens when you type.

Any workaround for that in your minds ?

[Rossen Hristov]

Hello Subileau Pascal,

Make the constructor of CustomFilterDescriptor accept an IEnumerable of GridViewColumns.

Then below, see whether the column is a data column and only if it is, cast it and create a filer on it. Something like this:

public CustomFilterDescriptor(IEnumerable<GridViewColumn> columns)
{
    this.compositeFilterDesriptor = new CompositeFilterDescriptor();
    this.compositeFilterDesriptor.LogicalOperator = FilterCompositionLogicalOperator.Or;

    foreach (var column in columns)
    {
        GridViewDataColumn dataColumn = column as GridViewDataColumn;
        if (dataColumn != null)
        {
            this.compositeFilterDesriptor.FilterDescriptors.Add(this.CreateFilterForColumn(column));
        }
    }
}

I hope this helps.

Greetings,
Ross
the Telerik team

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[Kristof]

I have also the same problem...

The search don't work...
I did the same like in the demo but I used GridViewColumn with images and GridViewDataColumn in my RadGridView.

The difference with my CustomFilterDescriptor class is that I check if the type of column is GridViewDataColumn.
But it's also don't work...

CustomFilterDescriptor class:

Public Sub New(ByVal columns As IEnumerable(Of GridViewColumn))
        Me.compositeFilterDesriptor = New CompositeFilterDescriptor()
        Me.compositeFilterDesriptor.LogicalOperator = FilterCompositionLogicalOperator.[Or]

        Try
            For Each column As GridViewColumn In columns
                Dim dataColumn As GridViewDataColumn = TryCast(column, GridViewDataColumn)
                If dataColumn IsNot Nothing Then
                    Me.compositeFilterDesriptor.FilterDescriptors.Add(Me.CreateFilterForColumn(dataColumn))
                End If
            Next
        Catch ex As Exception
            Throw ex
        End Try

End Sub

Is there a solution?

Thanks and regards,
Kristof

[Ludovic Gerbault]

try to select only the GridViewDataColumns which are of type String

My code looks like this :

this.ClientsGrid.Columns.OfType<GridViewDataColumn>().Where(x=>x.IsVisible == true && x.DataType == typeof(String))

[Kristof]

I tried the following...

Public ReadOnly Property CustomFilterDescriptor() As CustomFilterDescriptor
        Get
            If Me.m_customFilterDescriptor Is Nothing Then
                 Dim dataCols = (From col In Me.grdMCPOverview.Columns.OfType(Of GridViewDataColumn)() _
                 Let dataType = col.DataType _
                 Where (col.IsVisible) And (dataType Is GetType(String)) _
                 Select DirectCast(col, GridViewColumn)).ToList()

              Me.m_customFilterDescriptor = New CustomFilterDescriptor(dataCols)
              Me.grdMCPOverview.FilterDescriptors.Add(Me.m_customFilterDescriptor)
            End If
            Return Me.m_customFilterDescriptor
        End Get
End Property

But it still don't work...

[Rossen Hristov]

Hi Kristof,

Could you please open a separate support ticket and send us a sample project. We will look into it.

All the best,
Ross
the Telerik team

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[Jamest]

@Subileau Pascal - Thank you,  that fixed my issue of the filtering appearing not to work.
CustomFilterDescriptor = new CustomFilterDescriptor(this.RadGrid_Packages.Columns.OfType<GridViewDataColumn>().Where(x => x.IsVisible == true && x.DataType == typeof(String))

[aubrey]

hi Subileau,

how can i select only the GridViewDataColumns which are of type String or int? 
can you help me figure this out, i've tried it but it doesn't work.

hoping for your reply,
Aubrey :)

[Ludovic Gerbault]

Something like

raddatagrid.Columns.OfType<GridViewDataColumn>().Where(x.DataType == typeof(String) || x.DataType == typeof(Int32))

Should do the trick :)

[Almond]

Hello Telerik Gurus,

Can anyone give an example of the below inquiry using EF?

It will be very much appreciated :)

Thanks in advance.

almond