SQL Server :: Data Type Mismatch In Criteria Expression: Date

Oct 4, 2010

I am getting a "Data type mismatch in criteria expression" error when trying the following SELECT statement. strdt and spdate are Date types in my vb codebehind and the Contract field name is a DateTime field.

Dim
nmxSQL As
String =
"SELECT * FROM Nymex WHERE (NymexID='" & nymID &
"' And Contract>='" & strdt &
"' And Contract<='" & spdate &
"')"

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Whats The wrong With This Code

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Data type mismatch in criteria expression.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.OleDb.OleDbException: Data type mismatch in criteria expression.

Source Error:

Line 176: OleDbConnection MyConn = new OleDbConnection(ConfigurationSettings.AppSettings["strConn"]);//Luodaan yhteys
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Line 180: DataGrid1.DataSource=DataSet1.Tables["Testi"].DefaultView; //Asetetaan DataSourceksi Datasetin datatable "Testi" johon tiedot on haettu

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[Code]....

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