PROMS/Volian.Controls.Library/VlnFlexGrid.cs

@@ -538,12 +538,31 @@ namespace Volian.Controls.Library
 		  if (StepRTB.MySymbolFontName != "Arial Unicode MS")
 			  str = _ReplaceArialUnicodeMS.Replace(str, "$1" + StepRTB.MySymbolFontName + "$3");
 		  str = _ReplaceTextFont.Replace(str, "$1" + ff.Name + "$4");
+		  // To prevent scroll bars from being flashed on/off
+		  // - save an image of the current grid
+		  // - set Visible to false
+		  // - draw the saved grid image
+		  // - do the the load/reload of the grid
+		  // - set Visible back to true.
+		  System.Drawing.Image img = this.CreateImage();
+		  Visible = false;
+		  if (Parent is GridItem)
+		  {
+			  using (Graphics gr = (Parent as GridItem).CreateGraphics())
+			  {
+				  gr.DrawImage(img, Left, Top);
+			  }
+		  }
+		  Clear();
+		  MergedRanges.Clear();
 		  using (StringReader sr = new StringReader(str))
 		  {
 			  ReadXml(sr);
 			  this.BorderStyle = C1.Win.C1FlexGrid.Util.BaseControls.BorderStyleEnum.None;
 			  sr.Close();
 		  }
+		  Visible = true;
+
 	  }
 		private void SetupGrid(int numrows, int numcols) //C1FlexGrid NewGrid()
 		{