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Here are some frequently asked questions about Windows Forms and their answers.

Windows Forms FAQs

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  • How do I test for a null value in DataView.RowFilter?

    You can use the IsNull operator. // the outer quotes are double-quotes // the inner quotes are two single-quotes // Fax is the column mapping name dataView1.RowFilter = "IsNull(Fax, '') = ''"; // for a numeric null in custNumber...


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