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Unable to cast object of type 'System.Windows.Forms.BindingSource' to type 'System.Data.DataSet'.

Posted on 2009-05-19
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Last Modified: 2013-11-26
hello  i am  tried to add values from textboxes to  datagridview and i get error

Unable to cast object of type 'System.Windows.Forms.BindingSource' to type 'System.Data.DataSet'.

what these mean.I am using ms access 2003 linked with vb 2005 and i  using binding navigator

can anyone tell me what is the problem.The line that i get error is  Dim ds As DataSet = DirectCast(bsource.DataSource, DataSet)
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
       
        Dim bsource As BindingSource = Me.PurchasedetailsDataGridView.DataSource
        Dim ds As DataSet = DirectCast(bsource.DataSource, DataSet)
        Dim purchasedetailstable As New DataTable
        Dim dr As DataRow = ds.Tables("purchaseDetails").NewRow
        dr("PurchaseID") = PurchaseIDTextBox.Text
        dr("ProductID") = ProductIDComboBox.SelectedValue
        dr("UnitPrice") = UnitPriceTextBox.Text
        dr("Quantity") = QuantityTextBox.Text()
        dr("Productname") = ProductNameTextBox.Text
        dr("Total") = Convert.ToDecimal(UnitPriceTextBox.Text.ToString()) * Convert.ToDecimal(QuantityTextBox.Text.ToString())
 
        ds.Tables("purchaseDetails").Rows.Add(dr)

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Question by:demoniumz
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rdeputat earned 500 total points
ID: 24420743
try

Dim ds As DataSet = DirectCast( DirectCast(bsource.DataSource, BindingSource ).DataSource, DataSet)
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by:demoniumz
ID: 24420858
is not giving me the previous error unable to cast but nothing appear when i add a product in the datagridview
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Expert Comment

by:rdeputat
ID: 24420892
give me source code InitializeComponent();
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3 Use Cases for Connected Systems

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, testing some more, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us.

 
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by:demoniumz
ID: 24420961
where to  find these?
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by:rdeputat
ID: 24421014
Public Class Form1

    Public Sub New()

        ' This call is required by the Windows Form Designer.
        InitializeComponent()

        ' Add any initialization after the InitializeComponent() call.

    End Sub
End Class
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by:demoniumz
ID: 24421016
tell me and i give you  at the night i must go to work now thnks
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by:rdeputat
ID: 24421061
send me full source code dep@dextechnology.com
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by:demoniumz
ID: 24424411
sent allready
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3 Use Cases for Connected Systems

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, testing some more, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us.

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