Hello Peter,
I am copying the answer from your support ticket here so the community can benefit from it:
You can implement a custom
TxtFormatProvider using the Import functionality as it is demonstrated in the following forum thread
http://www.telerik.com/forums/bind-data-to-radrichtextbox. Importing is the only appropriate option to insert text in the RadRichTextBox control. It is up to you from where to take the text. You can use the
RadTextBox as a connection to transfer changes from the
DataTable to the
RadRichTextBox. Here is sample approach:
DataTable dt = new DataTable();
public Form1()
{
InitializeComponent();
RadRichTextBinder binder = new RadRichTextBinder(this.radRichTextBox1);
this.radTextBox1.DataBindings.Add("Text", binder, "Text", true, DataSourceUpdateMode.OnPropertyChanged);
dt.Columns.Add("IdCol", typeof(int));
dt.Columns.Add("TextCol", typeof(string));
dt.Rows.Add(1, "");
DataRow row = dt.Rows[0];
DataView dv = row.Table.DefaultView;
this.radTextBox1.TextBoxElement.DataBindings.Add("Text", dv, "TextCol");
}
public class RadRichTextBinder : TxtFormatProvider
{
private RadRichTextBox richTextBox;
public event EventHandler TextChanged;
public RadRichTextBinder(RadRichTextBox richTextBox)
{
this.richTextBox = richTextBox;
this.richTextBox.DocumentContentChanged += new EventHandler(richTextBox_DocumentContentChanged);
}
void richTextBox_DocumentContentChanged(object sender, EventArgs e)
{
OnTextChanged(new EventArgs());
}
protected virtual void OnTextChanged(EventArgs e)
{
if (this.TextChanged != null)
{
this.TextChanged(this, e);
}
}
public string Text
{
get
{
return this.Export(this.richTextBox.Document);
}
set
{
this.richTextBox.DocumentContentChanged -= new EventHandler(richTextBox_DocumentContentChanged);
this.richTextBox.Document = this.Import(value);
OnTextChanged(new EventArgs());
this.richTextBox.DocumentContentChanged += new EventHandler(richTextBox_DocumentContentChanged);
}
}
}
private void radButton1_Click(object sender, EventArgs e)
{
DataRow row = dt.Rows[0];
row["TextCol"] = DateTime.Now ;
}
private void Form1_Load(object sender, EventArgs e)
{
DataRow row = dt.Rows[0];
row["TextCol"] = DateTime.Now ;
}
Please find attached a sample video (drag and drop over the browser to play), demonstrating the behavior on my end. I would like to note that this is quite a sample implementation just to give you an idea. It may not cover all possible cases, so feel free to modify it on a way which suits your scenario best.
Regards,
Desislava
Telerik
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