SqlConnectionStringBuilder.Item[String] SqlConnectionStringBuilder.Item[String] SqlConnectionStringBuilder.Item[String] SqlConnectionStringBuilder.Item[String] Property

Definition

Gets or sets the value associated with the specified key. In C#, this property is the indexer.

public:
 virtual property System::Object ^ default[System::String ^] { System::Object ^ get(System::String ^ keyword); void set(System::String ^ keyword, System::Object ^ value); };
public override object this[string keyword] { get; set; }
member this.Item(string) : obj with get, set
Default Public Overrides Property Item(keyword As String) As Object

Parameters

keyword
String String String String

The key of the item to get or set.

Property Value

The value associated with the specified key.

Exceptions

keyword is a null reference (Nothing in Visual Basic).

Tried to add a key that does not exist within the available keys.

Invalid value within the connection string (specifically, a Boolean or numeric value was expected but not supplied).

Examples

The following code, in a console application, creates a new SqlConnectionStringBuilder and adds key/value pairs to its connection string, using the Item[String] property.

class Program
{
    static void Main()
    {
        SqlConnectionStringBuilder builder = 
            new SqlConnectionStringBuilder();
        builder["Data Source"] = "(local)";
        builder["Integrated Security"] = true;
        builder["Initial Catalog"] = "AdventureWorks";

        // Overwrite the existing value for the Data Source value.
        builder["Data Source"] = ".";

        Console.WriteLine(builder.ConnectionString);
        Console.WriteLine();
        Console.WriteLine("Press Enter to continue.");
        Console.ReadLine();
    }
}
Module Module1
    Sub Main()
        Dim builder As New SqlConnectionStringBuilder
        builder.Item("Data Source") = "(local)"
        ' Item is the default property, so 
        ' you needn't include it in the reference.
        builder("Integrated Security") = True
        builder.Item("Initial Catalog") = "AdventureWorks"

        ' Overwrite the existing value for the Data Source value.
        builder.Item("Data Source") = "."

        Console.WriteLine(builder.ConnectionString)
        Console.WriteLine()
        Console.WriteLine("Press Enter to continue.")
        Console.ReadLine()
    End Sub
End Module

Remarks

Because the SqlConnectionStringBuilder contains a fixed-size dictionary, trying to add a key that does not exist within the dictionary throws a KeyNotFoundException.

Applies to

See also