How do I put contents of a blob field in a richtextboxextended field

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Hi please help.
I have defined in MYSQL a table with a blob field named RTFText.
The display is performed with richtextboxextended.dll.
Definitions:

private RichTextBoxExtended.RichTextBoxExtended richTextBoxExtended1;
this.richTextBoxExtended1 = new RichTextBoxExtended.RichTextBoxExtended();

//
// richTextBoxExtended1
//
this.richTextBoxExtended1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
            | System.Windows.Forms.AnchorStyles.Left)
            | System.Windows.Forms.AnchorStyles.Right)));
this.richTextBoxExtended1.DetectURLs = true;
this.richTextBoxExtended1.DocumentName = &quot;document.rtf&quot;;
this.richTextBoxExtended1.Location = new System.Drawing.Point(240, 8);
this.richTextBoxExtended1.Name = &quot;richTextBoxExtended1&quot;;
this.richTextBoxExtended1.PrintActions = RichTextBoxExtended.PrintActions.StandardPrint;
this.richTextBoxExtended1.ShowBold = true;
this.richTextBoxExtended1.ShowCenterJustify = true;
this.richTextBoxExtended1.ShowColors = true;
this.richTextBoxExtended1.ShowFont = true;
this.richTextBoxExtended1.ShowItalic = true;
this.richTextBoxExtended1.ShowLeftJustify = true;
this.richTextBoxExtended1.ShowOpen = false;
this.richTextBoxExtended1.ShowPrint = true;
this.richTextBoxExtended1.ShowRedo = true;
this.richTextBoxExtended1.ShowRightJustify = true;
this.richTextBoxExtended1.ShowSave = false;
this.richTextBoxExtended1.ShowStamp = false;
this.richTextBoxExtended1.ShowStrikeout = false;
this.richTextBoxExtended1.ShowUnderline = true;
this.richTextBoxExtended1.ShowUndo = true;
this.richTextBoxExtended1.Size = new System.Drawing.Size(720, 480);
this.richTextBoxExtended1.StampAction = RichTextBoxExtended.StampActions.EditedBy;
this.richTextBoxExtended1.StampColor = System.Drawing.Color.Blue;
this.richTextBoxExtended1.TabIndex = 21

private System.Windows.Forms.RichTextBox ergebnis;

            ergebnis = richTextBoxExtended1.RichTextBox;
            ergebnis.WordWrap = true;
            ergebnis.AcceptsTab = true;
            ergebnis.ShowSelectionMargin = true;
            ergebnis.KeyUp += new KeyEventHandler(ergebnis_KeyUp);
            richTextBoxExtended1.Toolbar.Buttons[richTextBoxExtended1.Toolbar.Buttons.Add("")].Style = ToolBarButtonStyle.Separator;
            tbGetPic = richTextBoxExtended1.Toolbar.Buttons[richTextBoxExtended1.Toolbar.Buttons.Add("")];
            tbGetPic.ToolTipText = "Vorhandene Bilder können ausgewählt werden";
            try
            {
                tbGetPic.ImageIndex = richTextBoxExtended1.Toolbar.ImageList.Images.AddStrip(imageList.Images[3]);
            }
            catch { }
            tbGetDrw = richTextBoxExtended1.Toolbar.Buttons[richTextBoxExtended1.Toolbar.Buttons.Add("")];
            tbGetDrw.ToolTipText = "Vorhandene Zeichnungen können ausgewählt werden";
            try
            {
                tbGetDrw.ImageIndex = richTextBoxExtended1.Toolbar.ImageList.Images.AddStrip(imageList.Images[4]);
            }
            catch { }
            tbPrint = richTextBoxExtended1.Toolbar.Buttons[20];
            richTextBoxExtended1.Toolbar.ButtonClick += new ToolBarButtonClickEventHandler(toolBar_ButtonClick);

It is possible to write ergebnis.Rtf to the blob field RTFText, but I found no way to get Data from RTFText into ergebnis.Rtf

ergebnis.Rtf = row["RTFText"].ToString() causes a crash. try...catch has not brought any hint (only "invalid file format" - but there is no file used!
Any solutions?

Thanks in advance mikr41

Posted 10-Jan-14 13:06pm

Member 10284036

Updated 13-Jan-14 3:09am

bowlturner

v2

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bowlturner · Answer 1 · 2014-01-13T03:44:00

I suspect you'll need something like this in there somewhere. You have a blob of bytes, you need to convert it back and using a fileStream and a binary writer can help you do that.

C#

// Create a file to hold the output.
 fs = new FileStream("logo" + pub_id + ".bmp", FileMode.OpenOrCreate, FileAccess.Write);
 bw = new BinaryWriter(fs);