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<asp:FileUpload ID="fuImage" runat="server" /><br />
<asp:TextBox ID="txtImageName" runat="server"/><br />
<asp:Button ID="btnUpload" runat="server" onClick="btnUpload_Click" Text="Upload" />
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<add name="ConnectionString" connectionString="Data Source=.\SQLEXPRESS;
AttachDbFilename=|DataDirectory|\Image.mdf;Integrated Security=True;
User Instance=True" providerName="System.Data.SqlClient"/>
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protected void btnUpload_Click(object sender, EventArgs e)
{
Stream imgStream = fuImage.PostedFile.InputStream;
int imgLen = fuImage.PostedFile.ContentLength;
string imgName = txtImageName.Text;
byte[] imgBinaryData = new byte[imgLen];
int n = imgStream.Read(imgBinaryData,0,imgLen);

//use the web.config to store the connection string
SqlConnection connection = new SqlConnection(ConfigurationManager.
ConnectionStrings["connectionString"].ConnectionString);
SqlCommand command = new SqlCommand("INSERT INTO Image (imagename,image)
VALUES ( @img_name, @img_data)", connection);

SqlParameter param0 = new SqlParameter("@img_name", SqlDbType.VarChar, 50);
param0.Value = imgName;
command.Parameters.Add(param0);

SqlParameter param1 = new SqlParameter("@img_data", SqlDbType.Image);
param1.Value = imgBinaryData;
command.Parameters.Add(param1);

connection.Open();
int numRowsAffected = command.ExecuteNonQuery();
connection.Close();
}
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