Combobox Not Showing Displaymember

I'm trying to display the Question ID's in the combo box, in order to reproduce the matching question in a text box. However rather than the Question ID's appearing, I am receiving

Solution 1:

You didn't post your Question class, but the DisplayMember and ValueMember fields aren't matching the property fields in the Question class:

It should look something like this:

PublicClass Question
  Property QuestionID AsIntegerProperty QuestionText AsStringPublicSubNew(q_ID AsInteger, q_Text AsString)
    QuestionID = q_ID
    QuestionText = q_Text
  EndSubEndClass

Then your data source properties would look like this:

cmbQuestion.DisplayMember = "QuestionID"cmbQuestion.ValueMember = "QuestionID"cmbQuestion.DataSource = retrieveQuestions() 

Solution 2:

You must first assign the datasource and then assign the field to show

cmbQuestion.DataSource = Nothing 'Resets data source

cmbQuestion.DataSource = retrieveQuestions() 'when form loads

cmbQuestion.DisplayMember = "Question_ID"

cmbQuestion.ValueMember = "Question_ID"