You need to execute your query using ExecuteNonQuery .check the below code.
public void insertData()
{
using (SqlConnection con = new SqlConnection(conString))
{
con.Open();
try
{
using (SqlCommand cmd = new SqlCommand("INSERT INTO dbo.Sources(SourceID, SourceName, Active) VALUES(@SourceID, @SourceName, @Active)", con))
{
cmd.Parameters.Add(new SqlParameter("SourceID", mSourceID));
cmd.Parameters.Add(new SqlParameter("SourceName", mSourceName));
cmd.Parameters.Add(new SqlParameter("Active", mActive));
cmd.ExecuteNonQuery();
}
}
catch (Exception Ex)
{
Console.WriteLine("Unable To Save Data. Error - " + Ex.Message);
}
}
}