Question

Can't figure out why my databindings are not working in VB.Net

Asked by: dyarosh

I'm using Visual Studio 8 to develop my Windows Form Application using VB.Net.  I have 2 tables, Employees and Employer.  The Employer has a list of Employers.  The Employees have a list of employees.  The Employees table has a field, EmployerID, that maps to the Employer table.

I've created a form for the user to edit the employee information.  I dragged the EmployerID field onto the form and set the bindings as shown in the attached graphic, EmployerID ComboBox.  THe EmployerID ComboBox Properties are shown in the attached graphic, EmployerID ComboBox Properties.

When the form is displayed, the employer name is displayed (not the employerid) which is what I want.  However, if I try and change the employer name, my form hangs.  I can't move from the field and the form does not respond.  I have to stop debugging.  

I can't figure out what I'm doing wrong.  I want the Employer Name to display on the form based on the EmployerID in the Employee record.  I want to be able to change the Employer Name from choosing a name from the list and then save the EmployerID in the Employee record.

Any help would be greatly appreciated.

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Asked On
2009-08-22 at 19:06:19ID24674182
Topics

Visual Studio

,

Microsoft Visual Basic.Net

,

.NET Framework 3.x versions

,

.NET

Participating Experts
1
Points
500
Comments
6

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Answers

 

by: CodeCruiserPosted on 2009-08-24 at 00:42:00ID: 25166222

I am not sure why it hangs but the Text property of the combobox is set to be the EmployerID rather than EmployerName. Is there any code behind the selection/index changed event of the combobox?

 

by: dyaroshPosted on 2009-08-24 at 05:08:46ID: 25167477

I changed the Text property to EmployerName.  There is no code behind the selection/index changed event of the combobox.  Changing the Text property still causes the program to hang.

 

by: CodeCruiserPosted on 2009-08-29 at 06:03:09ID: 25213910

Would you mind changing the binding approach? Fill a datatable programmatically and set it as the datasource  to the combobox.

For example

Dim dTable As New DataTable
Dim dbadp as New SQLDataAdapter("Select EmployeeID, EmployeeName From Employee", connectionstring)
dbadp.Fill(dTable)
dbadp.Dispose
combobox1.DataSource = dTable
combobox1.DisplayMember = "EmployeeName"
combobox1.ValueMember = "EmployeeID"

                                              
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by: dyaroshPosted on 2009-08-31 at 07:25:09ID: 31619296

Thanks for your help.  This solution worked for me.

20120131-EE-VQP-002

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