Let’s start with a very simple application.
Drop OpenFileDialog control in the application.
When user click on Pick File button using OpenFileDialog he will select a rtf file to display in richtextbox control.
The content of richtextbox control will be saved in the sql server table.
This is how our table looks like.
File content is the image data type column where we will store our rtf content.
<!–[if gte vml 1]> <![endif]–>
Put the following code in Pick file button click.
if(openFileDialog1.ShowDialog() == DialogResult.OK)
{
try
{
rtfContent.LoadFile(openFileDialog1.FileName);
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}
Put the following code in Save Button Click
SqlConnection conn=new SqlConnection(”Data Source=D-0824;Initial Catalog=WordInterOp; uid=sa;pwd=sa;”);
SqlCommand cmd=new SqlCommand();
cmd.CommandText = “Insert into RtfStore (fileName,fileContent) values ( @fname,@fcontent)”;
cmd.Connection=conn;
SqlParameter fileName=new SqlParameter(”@fname”,openFileDialog1.SafeFileName);
rtfContent.SaveFile(@”c:\temp.rtf”, RichTextBoxStreamType.RichText);
FileStream stream = new FileStream(@”c:\temp.rtf”, FileMode.Open, FileAccess.Read);
int size = Convert.ToInt32(stream.Length);
Byte[] rtf = new Byte[size];
stream.Read(rtf, 0, size);
SqlParameter fileContent=new SqlParameter();
fileContent.ParameterName=”@fcontent”;
fileContent.SqlDbType=SqlDbType.Image;
fileContent.Size=rtf.Length;
fileContent.Value=rtf;
cmd.Parameters.Add(fileName);
cmd.Parameters.Add(fileContent);
conn.Open();
int success=cmd.ExecuteNonQuery();
if(success==1)
{
MessageBox.Show(”Entered data successfully”);
}
openFileDialog1.SafeFileName- To get the name of file instead of the complete path.
rtfContent.SaveFile- Saving the content of the control in a rtf file.
RichTextBoxStreamType.RichText- This tells that we are saving richtext having some formatting and not just plain text.
Finally through filestream we are reading that file and saving it’s content in our sqlserver table.
Similary to read the rtf content from the database and display it in Richtextbox control, this is what we need to do
// cmd.commandText=”select fileContent from RtfStore where filename=’xyz’ “;
SqlDataReader dr = cmd.ExecuteReader();
if (dr.Read())
{
Byte[] rtf = new Byte[Convert.ToInt32((dr.GetBytes(0, 0,
null, 0, Int32.MaxValue)))];
long bytesReceived = dr.GetBytes(0, 0, rtf, 0, rtf.Length);
ASCIIEncoding encoding = new ASCIIEncoding();
rtfContent.Rtf = encoding.GetString(rtf, 0, Convert.ToInt32(bytesReceived));
}
Bye
Posted in Windows Application | Tags: Windows Application
