/// <summary>
///
/// </summary>
/// <param name="ComBox"></param>
/// <param name="SelTag"></param>
public static void SelectedComboBoxItemByTag(this System.Windows.Forms.ComboBox ComBox, object SelTag)
{
if (ComBox.Items != null && ComBox.Items.Count > 0)
{
ComBox.ComboBoxItem comBoxItem = null;
try
{
for (int i = 0; i < ComBox.Items.Count; i++)
{
comBoxItem = (ComBox.ComboBoxItem)ComBox.Items[i];
if (comBoxItem.Tag != null && comBoxItem.Tag.Equals(SelTag))
{
ComBox.SelectedIndex = i; break;
}
}
}
catch (System.Exception ex)
{
throw ex;
}
finally
{
if (comBoxItem != null)
{
comBoxItem = null;
}
}
}
}
/// <summary>
///
/// </summary>
/// <param name="ComBox"></param>
/// <param name="SelText"></param>
public static void SelectedComboBoxItemByText(this System.Windows.Forms.ComboBox ComBox, string SelText)
{
if (ComBox.Items != null && ComBox.Items.Count > 0)
{
ComBox.ComboBoxItem comBoxItem = null;
try
{
for (int i = 0; i < ComBox.Items.Count; i++)
{
comBoxItem = (ComBox.ComboBoxItem)ComBox.Items[i];
if (comBoxItem.Text != null && comBoxItem.Text.ToString() == SelText)
{
ComBox.SelectedIndex = i; break;
}
}
}
catch (System.Exception ex)
{
throw ex;
}
finally
{
if (comBoxItem != null)
{
comBoxItem = null;
}
}
}
}
/// <summary>
/// 重繪 Combo Box
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ComboBox_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
{
ComboBox comBox = (ComboBox)sender;
Graphics g = e.Graphics;
Rectangle rec = e.Bounds;
Font font = comBox.Font;
if (e.Index > -1)
{
if (comBox.Items[e.Index] != null && (ComBox.ComboBoxItem)comBox.Items[e.Index] != null)
{
ComBox.ComboBoxItem comBoxItem = (ComBox.ComboBoxItem)comBox.Items[e.Index];
SolidBrush solidBrush = new SolidBrush(Color.LightSkyBlue);
if (e.State == (DrawItemState.NoAccelerator | DrawItemState.NoFocusRect))
{
solidBrush = new SolidBrush(Color.LightSkyBlue);
e.Graphics.FillRectangle(solidBrush, rec);
}
else
{
e.Graphics.FillRectangle(solidBrush, rec);
}
solidBrush.Dispose();
System.Drawing.StringFormat sf = new System.Drawing.StringFormat();
SolidBrush sb = new SolidBrush(comBoxItem.ForeColor);
sf.Alignment = StringAlignment.Near;
e.Graphics.DrawString(comBoxItem.Text, font, sb, rec, sf);
e.DrawFocusRectangle();
sf = null; sb = null;
}
}
}
