mysql - 无法对 System.Int32 和 System.String 执行 'Like' 操作。与 MySQL VB.Net

Question

我不知道为什么这个错误仍然出现。它说要转换字符串，但我认为它已经是字符串格式了。有什么解决方案？

Private Sub txtSearch_TextChanged(sender As System.Object, e As System.EventArgs) Handles txtSearch.TextChanged
    Dim DV As New DataView(dbDataSet)
    DV.RowFilter = String.Format("emp_no Like '%{0}%'", txtSearch.Text)
    DataGridView1.DataSource = DV
End Sub

Answer 1

这样试试

Private Sub txtSearch_TextChanged(sender As System.Object, e As System.EventArgs) Handles txtSearch.TextChanged
    Dim DV As New DataView(dbDataSet)
    DV.RowFilter = String.Format("Convert(emp_no,'System.String') Like '%{0}%'", txtSearch.Text)
    DataGridView1.DataSource = DV
End Sub