You can use a variable of type (OleDbCommand) for the purpose of opening a channel of communication data file .

Type the select Statement: Select * form Table1 to get the number of countries form the data table table1.

Type the select Statement: Select Count (*) from Table1 retrieve all records form a spreadsheet table1.

Type the following Select Statement to show the “Continent” column from the data table Table1 without repetition: Select Distinct القارة form Table1.

“da.file”Is a way to fill the rows (records) in (DataTable) inside the memory.

................ is used in the declaration of variables.

The ..........control is used to select one of its elements.

The programming language which used in typing the program code is .................

The reserved word "Me" used in the code window to refer to the end of procedure.