如果我在组合框中选择一个来自 sql 的项目,我如何将多个数据从 sql 绑定到标签这是我的代码:
Private Sub cmboCourse_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmboCourse.SelectedIndexChanged
If cmboCourse.Text = "ADVANCED COMPUTER TECHNICIAN" Then
callMe()
ElseIf cmboCourse.Text = "AUTOELECTRICITY" Then
callMe()
ElseIf cmboCourse.Text = "AUTOMOTIVE" Then
callMe()
End If
End Sub
Private Sub callMe()
Dim str As String = ("Data Source=PC1; User ID=sa; Password=pwd;Databasfriend")
Dim con As New SqlConnection(str)
Dim str1 As String = "SELECT * FROM tbl_course"
Dim da As New SqlDataAdapter(str1, con)
Dim dataset1 As New DataSet()
da.Fill(dataset1, "course")
lbl.DataBindings.Add("text", dataset1, "course.Course_Code")
end sub
这是我的桌子
Course_Code Course
ACT ADVANCED COMPUTER TECHNICIAN
AE AUTOELECTRICITY
AM AUTOMOTIVE
它只绑定一个数据,我想在一个特定列中绑定许多数据示例我在组合框中选择一个课程 AUTOMOTIVE AUTOMOTIVE 的 course_code 如何绑定到标签,如果我选择 AUTOELECTRICITY AUTOELECTRICITY 的 course_code 如何绑定到相同的标签