Customize gridview c# windows application

Question

My Table has 10 columns fetched from a database, while I need to bind only 4 columns of it to a DataGridView in that 4 column 3 columns from database one of them should add dynamically(This column not in database) extra Windows application c#

string sql1 = "Select * From Table";
        SqlConnection connection1 = new SqlConnection(constring);
        SqlDataAdapter dataadapter = new SqlDataAdapter(sql1, connection1);
        DataSet ds1 = new DataSet();
        connection1.Open();
        dataadapter.Fill(ds1, Reporttype_tbl1);
        connection1.Close();
        dataGridView2.DataSource = ds1;
        dataGridView2.DataMember = Reporttype_tbl1;    

Answer 1

If you need extra processing beyond the data that you have in your table you could:

(Imagine that you want to calculate the revenue, giving the income and expenses of a business)

1. Use the query itself to do the extra processing for these columns that are not in the database.

For example: SELECT Name, Income, Expenses, Revenue = Income - Expenses FROM TABLE

In this case, the Revenue will be calculated as the query runs.

2. Use your C# code to do the extra processing and change your datasource to the new one.

For example:

• Add a Revenue column to your DataTable
• Make the formula for each line
• Use the new DataTable as DataSource

In this case, you are adding the data after the query has been completed, using your C# code to the calculations.

Picking the right one depends on whats kind of work you are wanting to do and what you feel more comfortable.