How To Get All Selected Value in MultiSelectComboBox

[Indra]

Dear All,

Help, How can I  get all selected value that i checked in MultiSelectComboBox.

Thanks

[Senthil Kumaran Rajan]

Hi Indra,

Thank you for using Syncfusion products.

This reported requirement can be achieved by using SelectedItems property in MultiSelectionComboBox. Please make use below code example for your reference.

Code Snippet[C#]:

//To get the added Visual items in MultiSelectionComboBox

this.multiSelectionComboBox1.VisualItems

//To get the selected items in MultiSelectionComboBox

this.multiSelectionComboBox1.SelectedItems

We have also prepared a sample and video for your reference which can be downloaded from the below location.

Sample Location : https://www.syncfusion.com/downloads/support/forum/119991/ze/MultiSelectSelectedValue229948667

Video Location ; https://www.syncfusion.com/downloads/support/forum/119991/ze/MultiSelection1192145006

Please let us know if you need further assistance.

Regards,
Senthil

[Thomas Pagram]

Hi Senthil,

This code seems to retrieve displaymembers rather than value members. How can I retrieve a list/array of all selected values:

this.multiSelectionComboBox1.SelectedItems

Thanks

Thomas

[Keerthana Jegannathan]

Hi Thomas.   

   

Thank you for your update.   

   

If you want to retrieve Selected Items collection for Value Member type in MultiSelectionComboBox, then we are sorry to say that at present there is no support for this reported requirement in MultiSelectionComboBox. Hence, we have prepared Custom MultiSelectionComboBox inherited from MultiSelectionComboBox.    

   

Steps Followed   

   

1)      Created custom control inherited from MultiSelectionComboBox.   

2)      Implemented property named SelectedValues collection that holds Selected Value collection.    

3)      Updated SelectedValue collection, by handling events named “CheckChanged” and “ControlRemoved”.   

   

Please make use of the below code snippet for your reference.    

 

Code Snippet: [C#] 

 

 

// Custom control to display ValueMember  

public class MultiSelectionComboBoxExt : MultiSelectionComboBox  

  

//To remove the selected values if it has been unchecked  

void MultiSelectionComboBoxExt_ControlRemoved(object sender, System.Windows.Forms.ControlEventArgs e)  

{  

     for (int i = 0; i <= this.SelectedValues.Count - 1; i++)  

     {  

        if (this.SelectedValues[i].DisplayMember == e.Control.Text)  

        {  

             this.SelectedValues.RemoveAt(i);  

             break;  

        }  

     }  

}  

  

// To add value members of the selected values into the collection when it is checked  

void MultiSelectionComboBoxExt_CheckChanged(object sender, CheckedStateEventArgs e  

{  

      if (e.Checked)  

      {  

       this.SelectedValues.Add(new DataCollection(this.SelectedItems[this.SelectedItems.Count - 1].ToString(), e.Item.ToString()));  

      }  

}  

 

 

We have prepared sample for your reference which can be downloaded from the below location. 

 

C#: http://www.syncfusion.com/downloads/support/directtrac/156659/ze/MultiSelectSelectedValue1-412557883  

 

VB: http://www.syncfusion.com/downloads/support/directtrac/156659/ze/ComboBoxSelectedValue123627717 

 

We have prepared a video, which can be downloaded from the below location.   

 

Video:  http://www.syncfusion.com/downloads/support/directtrac/156659/ze/MultiColumn438176432 

 

Screenshot 

 

 

 

 

Regards, 

Keerthana 

[Felix Bagur]

Hello,

Another way to get the selected values assuming you use a datatable with two columns pk and value (for example) would be the following:

 Public Function getSelectedKeys() As List(Of String)

      Dim pks As New List(Of String)()

        For i As Integer = 0 To Me.SelectedItems.Count - 1

              Dim dr As DataRow = CType(Me.DataSource, DataTable).Select("value = '" & SelectedItems(i) & "'").SingleOrDefault

              pks.Add(dr("pk"))

         Next i

   Return pks

 End Function

                 

[Vinothini]

Hi Felix, 

 

Thank you for defining us another method for getting the selected values list in MultiselectionComboBox using Linq . But in order to support all .Net Framework version, we have given the workaround in MultiSelectionComboBox control. 

 

Please let us know if you need any assistance on this. 

 

Regards, 

Vinothini.R