Open the file as a StreamReader, read it line after line. For each line
read, split it ( string[] arrParams = strLine.Split( new char[] {
'\t' } ) ). Then create a SQL Insert statement with parameters and execute
it using SqlCommand object:

1: SqlCommand cmd = new SqlCommand( "insert into table1( field1, field2 )
values( @field1, @field2 )", connection );
2: cmd.Parameters.Add( new SqlParameter( "@field1", arrParams[0] );
3: cmd.Parameters.Add( new SqlParameter( "@field2", arrParams[1] );
4: cmd.ExecuteNonQuery();

For each next line of text, lines 2 and 3 of the sample will change to:

cmd.Parameters["@field1"].Value = arrParams[0];
cmd.Parameters["@field2"].Value = arrParams[1];