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OleDbConnectionStringBuilder.ContainsKey Method

Determines whether the OleDbConnectionStringBuilder contains a specific key.

Namespace:  System.Data.OleDb
Assembly:  System.Data (in System.Data.dll)

public override bool ContainsKey(
	string keyword


Type: System.String

The key to locate in the OleDbConnectionStringBuilder.

Return Value

Type: System.Boolean
true if the OleDbConnectionStringBuilder contains an element that has the specified key; otherwise false.


keyword is null (Nothing in Visual Basic).

Although setting the Provider property may implicitly fill in appropriate key/value pairs for the provider, the ContainsKey method does not return true for implicitly provided keys. This method returns true only for explicitly provided keys.

The following example creates an OleDbConnectionStringBuilder instance, sets some of its properties, and then tries to determine whether various keys exist within the object by calling the ContainsKey method.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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