Dropdown list...easy one..

Question

Hey folks All I want to do is restrict a dropdown list such that when a user hits the OK button on a form it will verify that.... The dropdown list on the form is not null the dropdown list does NOT contain text that was just typed in by the user I can easily do a check against character length in to text property of the dropdown to ensure it is not blank null etc. However how can I prevent people from just typing something in? How can you set the combo box to default to one of the items within its collection? Thanks Bob

robin 0 · Answer

private void button1_Click(object sender System.EventArgs e) { if (this.comboBox1.Text != null && this.comboBox1.Text != ) { if (this.comboBox1.Items.IndexOf(this.comboBox1.Text) != -1) { this.DialogResult = DialogResult.OK; Close(); } else { MessageBox.Show(this Just select do not enter text); return; } } else { MessageBox.Show(this You have to select something); return; } } private void Form_Load(...) { //filling comboBox1 with items..... // after filling complete: this.comboBox1.SelectedIndex = 1; }