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Editorial Team
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Asked: 2026-05-26T20:37:49+00:00

I am new to MS Access 2007 and I am creating an application using

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I am new to MS Access 2007 and I am creating an application using Visual Studio 2010 C#. I am wondering what datatype should I use in each parameter I am creating.

For example:

command.Parameters.Add(new OleDbParameter("?company_name", OleDbType.VarChar));

This is a data type for characters(correct me if I am wrong).

My question is, what is the data type for numbers(example: zip code and telephone number(221-0019)) to use is correct to use the numeric data type?

P.S.: I already have my table in MS Access

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1 Answer

  1. Editorial Team

    Use whatever datatype fits your data.

    E.g. if you require a column to store whole number between 0 to 100 use a field with a DataType of Number with a FieldSize of Byte. For a whole number between 0 and 10,000 use Integer. For a fractional number between -1,000,000,000 and 1,000,000,000 use Single. See the MSAcess help for DataType and FieldSize to see what is appropriate for your data.

    Then, when manipulating the database from C#, use the equivalent OleDbType. See the help for OldDbType to decide which one is equivalent to the datatype in the MSAccess column.

    E.g. (as per above examples) OleDbType.UnsignedTinyInt, OleDbType.SmallInt, OleDbType.Single

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