Getting DataGrid current item into an object WPF
0
I am having trouble casting WPF DataGrid's current item to a linq-generated entity since a few days. It would be amazing if someone can help me out of this one.
I am getting data for the DataGrid using linq query as below:
Dim payableexpense As New exprev
Dim listofexpenses As IEnumerable(Of exprev)
Private Sub txtsearchname_TextChanged(sender As Object, e As TextChangedEventArgs) Handles txtsearchname.TextChanged
listofexpenses = From expenses In db.exprevs
Where expenses.school_id = currentschool.school_id AndAlso expenses.title.Contains(txtsearchname.Text.ToString) AndAlso expenses.status <> 1 AndAlso expenses.type = 1
dgvsearchresults.ItemsSource = listofexpenses
dgvsearchresults.Items.Refresh()
stpexpensedetails.DataContext = payableexpense
End Sub
And for the DataGrid selection changed event, I have this code:
Private Sub dgvsearchresults_SelectionChanged(sender As Object, e As SelectionChangedEventArgs) Handles dgvsearchresults.SelectionChanged
payableexpense = dgvsearchresults.CurrentItem
End Sub
But during run-time, it is throwing an exception that:
"unable to cast object of type 'ms.internal.namedobject' to 'exprev'"
At another place in my project, the same approach is working fine.
.net wpf vb.net linq linq-to-sql
edited Nov 22 '18 at 3:56
kit
1,1063816
asked Nov 22 '18 at 3:20
Abdullah EtizazAbdullah Etizaz
134
add a comment |
0
I am having trouble casting WPF DataGrid's current item to a linq-generated entity since a few days. It would be amazing if someone can help me out of this one.
I am getting data for the DataGrid using linq query as below:
Dim payableexpense As New exprev
Dim listofexpenses As IEnumerable(Of exprev)
Private Sub txtsearchname_TextChanged(sender As Object, e As TextChangedEventArgs) Handles txtsearchname.TextChanged
listofexpenses = From expenses In db.exprevs
Where expenses.school_id = currentschool.school_id AndAlso expenses.title.Contains(txtsearchname.Text.ToString) AndAlso expenses.status <> 1 AndAlso expenses.type = 1
dgvsearchresults.ItemsSource = listofexpenses
dgvsearchresults.Items.Refresh()
stpexpensedetails.DataContext = payableexpense
End Sub
And for the DataGrid selection changed event, I have this code:
Private Sub dgvsearchresults_SelectionChanged(sender As Object, e As SelectionChangedEventArgs) Handles dgvsearchresults.SelectionChanged
payableexpense = dgvsearchresults.CurrentItem
End Sub
But during run-time, it is throwing an exception that:
"unable to cast object of type 'ms.internal.namedobject' to 'exprev'"
At another place in my project, the same approach is working fine.
.net wpf vb.net linq linq-to-sql
edited Nov 22 '18 at 3:56
kit
1,1063816
asked Nov 22 '18 at 3:20
Abdullah EtizazAbdullah Etizaz
134
What isexprev? Show us the code regardingexprev
– zack raiyan
Nov 22 '18 at 4:21
@zackraiyan exprev is a Linq-to-SQL generated entity based on a table in Database.
– Abdullah Etizaz
Nov 22 '18 at 12:00
add a comment |
0
0
0
I am having trouble casting WPF DataGrid's current item to a linq-generated entity since a few days. It would be amazing if someone can help me out of this one.
I am getting data for the DataGrid using linq query as below:
Dim payableexpense As New exprev
Dim listofexpenses As IEnumerable(Of exprev)
Private Sub txtsearchname_TextChanged(sender As Object, e As TextChangedEventArgs) Handles txtsearchname.TextChanged
listofexpenses = From expenses In db.exprevs
Where expenses.school_id = currentschool.school_id AndAlso expenses.title.Contains(txtsearchname.Text.ToString) AndAlso expenses.status <> 1 AndAlso expenses.type = 1
dgvsearchresults.ItemsSource = listofexpenses
dgvsearchresults.Items.Refresh()
stpexpensedetails.DataContext = payableexpense
End Sub
And for the DataGrid selection changed event, I have this code:
Private Sub dgvsearchresults_SelectionChanged(sender As Object, e As SelectionChangedEventArgs) Handles dgvsearchresults.SelectionChanged
payableexpense = dgvsearchresults.CurrentItem
End Sub
But during run-time, it is throwing an exception that:
"unable to cast object of type 'ms.internal.namedobject' to 'exprev'"
At another place in my project, the same approach is working fine.
.net wpf vb.net linq linq-to-sql
edited Nov 22 '18 at 3:56
kit
1,1063816
asked Nov 22 '18 at 3:20
Abdullah EtizazAbdullah Etizaz
134
I am having trouble casting WPF DataGrid's current item to a linq-generated entity since a few days. It would be amazing if someone can help me out of this one.
I am getting data for the DataGrid using linq query as below:
Dim payableexpense As New exprev
Dim listofexpenses As IEnumerable(Of exprev)
Private Sub txtsearchname_TextChanged(sender As Object, e As TextChangedEventArgs) Handles txtsearchname.TextChanged
listofexpenses = From expenses In db.exprevs
Where expenses.school_id = currentschool.school_id AndAlso expenses.title.Contains(txtsearchname.Text.ToString) AndAlso expenses.status <> 1 AndAlso expenses.type = 1
dgvsearchresults.ItemsSource = listofexpenses
dgvsearchresults.Items.Refresh()
stpexpensedetails.DataContext = payableexpense
End Sub
And for the DataGrid selection changed event, I have this code:
Private Sub dgvsearchresults_SelectionChanged(sender As Object, e As SelectionChangedEventArgs) Handles dgvsearchresults.SelectionChanged
payableexpense = dgvsearchresults.CurrentItem
End Sub
But during run-time, it is throwing an exception that:
"unable to cast object of type 'ms.internal.namedobject' to 'exprev'"
At another place in my project, the same approach is working fine.
.net wpf vb.net linq linq-to-sql
.net wpf vb.net linq linq-to-sql
edited Nov 22 '18 at 3:56
kit
1,1063816
asked Nov 22 '18 at 3:20
Abdullah EtizazAbdullah Etizaz
134
edited Nov 22 '18 at 3:56
kit
1,1063816
asked Nov 22 '18 at 3:20
Abdullah EtizazAbdullah Etizaz
134
edited Nov 22 '18 at 3:56
kit
1,1063816
edited Nov 22 '18 at 3:56
kit
1,1063816
edited Nov 22 '18 at 3:56
kit
1,1063816
1,1063816
asked Nov 22 '18 at 3:20
Abdullah EtizazAbdullah Etizaz
134
asked Nov 22 '18 at 3:20
Abdullah EtizazAbdullah Etizaz
134
asked Nov 22 '18 at 3:20
Abdullah EtizazAbdullah Etizaz
134
134
What isexprev? Show us the code regardingexprev
– zack raiyan
Nov 22 '18 at 4:21
@zackraiyan exprev is a Linq-to-SQL generated entity based on a table in Database.
– Abdullah Etizaz
Nov 22 '18 at 12:00
add a comment |
What isexprev? Show us the code regardingexprev
– zack raiyan
Nov 22 '18 at 4:21
@zackraiyan exprev is a Linq-to-SQL generated entity based on a table in Database.
– Abdullah Etizaz
Nov 22 '18 at 12:00
What is
exprev ? Show us the code regarding exprev– zack raiyan
Nov 22 '18 at 4:21
What is
exprev ? Show us the code regarding exprev– zack raiyan
Nov 22 '18 at 4:21
@zackraiyan exprev is a Linq-to-SQL generated entity based on a table in Database.
– Abdullah Etizaz
Nov 22 '18 at 12:00
@zackraiyan exprev is a Linq-to-SQL generated entity based on a table in Database.
– Abdullah Etizaz
Nov 22 '18 at 12:00
add a comment |
1 Answer
1
active
oldest
votes
0
Use the TryCast method to try to cast the SelectedItem property to an exprev:
Private Sub dgvsearchresults_SelectionChanged(sender As Object, e As SelectionChangedEventArgs) Handles dgvsearchresults.SelectionChanged
Dim selectedItem As exprev = TryCast(dgvsearchresults.SelectedItem, exprev)
If selectedItem IsNot Nothing Then
payableexpense = selectedItem
'...
End If
End Sub
answered Nov 22 '18 at 12:50
mm8mm8
84.1k81931
Thank You this is exactly what I was looking for. Sorry for not marking it as and answer earlier.
– Abdullah Etizaz
Dec 9 '18 at 14:00
add a comment |
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1 Answer
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1 Answer
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0
Use the TryCast method to try to cast the SelectedItem property to an exprev:
Private Sub dgvsearchresults_SelectionChanged(sender As Object, e As SelectionChangedEventArgs) Handles dgvsearchresults.SelectionChanged
Dim selectedItem As exprev = TryCast(dgvsearchresults.SelectedItem, exprev)
If selectedItem IsNot Nothing Then
payableexpense = selectedItem
'...
End If
End Sub
answered Nov 22 '18 at 12:50
mm8mm8
84.1k81931
Thank You this is exactly what I was looking for. Sorry for not marking it as and answer earlier.
– Abdullah Etizaz
Dec 9 '18 at 14:00
add a comment |
0
Use the TryCast method to try to cast the SelectedItem property to an exprev:
Private Sub dgvsearchresults_SelectionChanged(sender As Object, e As SelectionChangedEventArgs) Handles dgvsearchresults.SelectionChanged
Dim selectedItem As exprev = TryCast(dgvsearchresults.SelectedItem, exprev)
If selectedItem IsNot Nothing Then
payableexpense = selectedItem
'...
End If
End Sub
answered Nov 22 '18 at 12:50
mm8mm8
84.1k81931
Thank You this is exactly what I was looking for. Sorry for not marking it as and answer earlier.
– Abdullah Etizaz
Dec 9 '18 at 14:00
add a comment |
0
0
0
Use the TryCast method to try to cast the SelectedItem property to an exprev:
Private Sub dgvsearchresults_SelectionChanged(sender As Object, e As SelectionChangedEventArgs) Handles dgvsearchresults.SelectionChanged
Dim selectedItem As exprev = TryCast(dgvsearchresults.SelectedItem, exprev)
If selectedItem IsNot Nothing Then
payableexpense = selectedItem
'...
End If
End Sub
answered Nov 22 '18 at 12:50
mm8mm8
84.1k81931
Use the TryCast method to try to cast the SelectedItem property to an exprev:
Private Sub dgvsearchresults_SelectionChanged(sender As Object, e As SelectionChangedEventArgs) Handles dgvsearchresults.SelectionChanged
Dim selectedItem As exprev = TryCast(dgvsearchresults.SelectedItem, exprev)
If selectedItem IsNot Nothing Then
payableexpense = selectedItem
'...
End If
End Sub
answered Nov 22 '18 at 12:50
mm8mm8
84.1k81931
answered Nov 22 '18 at 12:50
mm8mm8
84.1k81931
answered Nov 22 '18 at 12:50
mm8mm8
84.1k81931
answered Nov 22 '18 at 12:50
mm8mm8
84.1k81931
84.1k81931
Thank You this is exactly what I was looking for. Sorry for not marking it as and answer earlier.
– Abdullah Etizaz
Dec 9 '18 at 14:00
add a comment |
Thank You this is exactly what I was looking for. Sorry for not marking it as and answer earlier.
– Abdullah Etizaz
Dec 9 '18 at 14:00
Thank You this is exactly what I was looking for. Sorry for not marking it as and answer earlier.
– Abdullah Etizaz
Dec 9 '18 at 14:00
Thank You this is exactly what I was looking for. Sorry for not marking it as and answer earlier.
– Abdullah Etizaz
Dec 9 '18 at 14:00
add a comment |
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What is
exprev? Show us the code regardingexprev– zack raiyan
Nov 22 '18 at 4:21
@zackraiyan exprev is a Linq-to-SQL generated entity based on a table in Database.
– Abdullah Etizaz
Nov 22 '18 at 12:00