load date from sql server

You have not really specified exactly what you are looking to do, but here is a quick example:

StringBuilder htmlBuilder = new StringBuilder();
//Open up the connection to the sql server...
using(SqlDataReader dbReader = sqlConn.ExecuteReader())
{
while(dbReader.Read())
{
htmlBuilder.Append(dbReader.ReadString(0));
}
}

this.controlToPopulate.Text = htmlBuilder.ToString();