ProgressBar Control (Windows Forms)
The ToolStripProgressBar control replaces and adds functionality to the ProgressBar control; however, the ProgressBar control is retained for both backward compatibility and future use, if you choose.
The Windows Forms ProgressBar control indicates the progress of an action by displaying an appropriate number of rectangles arranged in a horizontal bar. When the action is complete, the bar is filled. Progress bars are commonly used to give the user an indication of how long to wait for a protracted action to complete—for instance, when a large file is being loaded.