public static Label CreateLabelHeader(Expander expander, string text, Color backColor, Image collapsedImage = null, Image expandedImage = null, int height = 25, Font font = null)
{
Label headerLabel = new Label();
headerLabel.Text = text;
headerLabel.AutoSize = false;
headerLabel.Height = height;
if (font != null)
{
headerLabel.Font = font;
}
headerLabel.TextAlign = ContentAlignment.MiddleLeft;
if (collapsedImage != null && expandedImage != null)
{
headerLabel.Image = collapsedImage;
headerLabel.ImageAlign = ContentAlignment.MiddleRight;
}
headerLabel.BackColor = backColor;
if (collapsedImage != null && expandedImage != null)
{
expander.StateChanged += delegate { headerLabel.Image = expander.Expanded ? collapsedImage : expandedImage; };
}
headerLabel.Click += delegate { expander.Toggle(); };
expander.Header = headerLabel;
return(headerLabel);
}
private void CreateFloatingExpander3()
{
Expander expander = new Expander();
expander.Size = new Size(250, 120);
expander.Left = 350;
expander.Top = 230;
expander.BorderStyle = BorderStyle.FixedSingle;
Label headerLabel = new Label();
headerLabel.Text = "Click me";
headerLabel.AutoSize = false;
headerLabel.Font = new Font(headerLabel.Font, FontStyle.Bold);
headerLabel.TextAlign = ContentAlignment.MiddleLeft;
headerLabel.BackColor = SystemColors.ActiveBorder;
headerLabel.Click += delegate
{
expander.Toggle();
if (expander.Expanded)
{
headerLabel.BackColor = SystemColors.ActiveBorder;
}
else
{
headerLabel.BackColor = SystemColors.ActiveCaption;
}
};
expander.Header = headerLabel;
Label labelContent = new Label();
labelContent.Text = "You are not limited to use the ExpanderHelper to create your header. Here is a example with a custom code and custom click event handler that change the header backcolor when the expander state change.";
labelContent.Size = new System.Drawing.Size(expander.Width, 75);
expander.Content = labelContent;
this.Controls.Add(expander);
}
public static Label CreateLabelHeader(Expander expander, string text, Color backColor, Image collapsedImage = null, Image expandedImage = null, int height = 25, Font font = null)
{
Label headerLabel = new Label();
headerLabel.Text = text;
headerLabel.AutoSize = false;
headerLabel.Height = height;
if (font != null)
headerLabel.Font = font;
headerLabel.TextAlign = ContentAlignment.MiddleLeft;
if (collapsedImage != null && expandedImage != null)
{
headerLabel.Image = collapsedImage;
headerLabel.ImageAlign = ContentAlignment.MiddleRight;
}
headerLabel.BackColor = backColor;
if (collapsedImage != null && expandedImage != null)
{
expander.StateChanged += delegate { headerLabel.Image = expander.Expanded ? collapsedImage : expandedImage; };
}
headerLabel.Click += delegate { expander.Toggle(); };
expander.Header = headerLabel;
return headerLabel;
}
