private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
this.btnOK.Enabled = ((this.comboBox1.SelectedIndex >= 0) && (this.cboX.SelectedIndex >= 0)) &&
(this.cboY.SelectedIndex >= 0);
if (this.comboBox1.SelectedIndex >= 0)
{
List <string> excelColumns = ExcelTools.GetExcelColumns(this.textBox1.Text, this.comboBox1.Text);
for (int i = 0; i < excelColumns.Count; i++)
{
this.cboX.Items.Add(excelColumns[i]);
this.cboY.Items.Add(excelColumns[i]);
}
if (this.cboX.Items.Count > 0)
{
this.cboX.SelectedIndex = 0;
this.cboY.SelectedIndex = 0;
}
if (this.cboX.Items.Count > 1)
{
this.cboY.SelectedIndex = 1;
}
}
}