how can i insert a image in sql database

1) Bring up SQL Server Management Studio.
2) Connect, and open the database you want to add the image to.
3) Expand the tables, and either add a new table with an appropriate index field, or right click teh table and select design.
4) Add a field called "myImage", and make its datatype "image". Allow nulls.
5) Close SQL Server Management studio.
To add images to the table (I will assume a new record, the table has an Identity field, and just the myImage column):

using (SqlConnection con = new SqlConnection(connectionString))
    {
    using (SqlCommand com = new SqlCommand("INSERT INTO myTable (myImage) VALUES (@IM)", con))
        {
        byte[] imageData = File.ReadAllBytes(@"F:\Temp\Picture.jpg");
        com.Parameters.AddWithValue("@IM", imageData);
        com.ExecuteNonQuery();
        }
    }