Access数据库在c＃中选择多行

Question

I have been following this site for basic Access database implementation in C#

http://www.homeandlearn.co.uk/csharp/csharp_s12p12.html

I want to search more than one row. This code works for one row.

string searchFor = txtFurniture.Text;
returnedRows = ds1.Tables["Furniture"].Select("Finish='" + searchFor + "'");

How do I add in additional rows to check? I have tried something like

returnedRows = ds1.Tables["Furniture"].Select("Finish='" + "Style='" + searchFor + "'");

but this fails.

Answer 1

you need to add and condition

returnedRows = ds1.Tables["Furniture"].Select("Finish='" + searchFor +
                                           "' and Style='" + searchFor + "'");

In addition you can check this answer might help you to understand easily : Datatable select with multiple conditions

Answer 2

You mean an additional field to check.

Make a condition that looks like this:

Finish='something' and Style='something'

using:

returnedRows = ds1.Tables["Furniture"].Select("Finish='" + searchFor + "' and Style='" + searchFor + "'");

Answer 3

As referenced in the documentation for the DataTable.Select method , the documentation for the DataColumn.Expression property describes the syntax to be used with the filterExpression parameter. In your case, use And to create a compound expression with your two conditions:

returnedRows = ds1.Tables["Furniture"].Select("Finish='" + searchFor + "' And Style='" + searchFor2 + "'");

...or more readably...

string filterExpression = string.Format("Finish='{0}' And Style='{1}'", searchFor, searchFor2);
DataRow[] returnedRows = ds1.Tables["Furniture"].Select(filterExpression);