Why does my Progressbar percentage disappear

Abraham Lukwesa

Hi 
My progressbar perecentage disappears when the progressbar updates why is this?
 
CODE:




public void PBPercentage()       {             int percent = (int)(((double)(progressBar1.Value - progressBar1.Minimum) / (double)(progressBar1.Maximum - progressBar1.Minimum)) * 100);           using (Graphics gr = progressBar1.CreateGraphics())           {               gr.DrawString(percent.ToString() + "%", SystemFonts.DefaultFont, Brushes.Black,               new PointF(progressBar1.Width / 2 - (gr.MeasureString(percent.ToString() + "%",               SystemFonts.DefaultFont).Width / 2.0F),               progressBar1.Height / 2 - (gr.MeasureString(percent.ToString() + "%",                SystemFonts.DefaultFont).Height / 2.0F)));              }       }

2 Replies

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Shweta Lodha12y ago
After you Assign percentage text to progress bar, do
Application.DoEvents();
Vulpes12y ago
To get your graphics to persist each time the progressbar is repainted, I think you'll need to handle it's Paint event and put the code in the eventhandler:

private void progressBar1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics gr = e.Graphics;
int percent = (int)(((double)(progressBar1.Value - progressBar1.Minimum) / (double)(progressBar1.Maximum - progressBar1.Minimum)) * 100);
gr.DrawString(percent.ToString() + "%", SystemFonts.DefaultFont, Brushes.Black, new PointF(progressBar1.Width / 2 - (gr.MeasureString(percent.ToString() + "%", SystemFonts.DefaultFont).Width / 2.0F), progressBar1.Height / 2 - (gr.MeasureString(percent.ToString() + "%", SystemFonts.DefaultFont).Height / 2.0F)));
}