SqlParameter Constructor (String, Object)

SqlParameter Constructor (String, Object)


Initializes a new instance of the SqlParameter class that uses the parameter name and a value of the new SqlParameter.

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

public SqlParameter(
	string parameterName,
	object value


Type: System.String

The name of the parameter to map.

Type: System.Object

An Object that is the value of the SqlParameter.

When you specify an Object in the value parameter, the SqlDbType is inferred from the Microsoft .NET Framework type of the Object.

Use caution when you use this overload of the SqlParameter constructor to specify integer parameter values. Because this overload takes a value of type Object, you must convert the integral value to an Object type when the value is zero, as the following C# example demonstrates.

Parameter = new SqlParameter("@pname", (object)0);

If you do not perform this conversion, the compiler assumes that you are trying to call the SqlParameter (string, SqlDbType) constructor overload.

The following example creates a SqlParameter and sets some of its properties.

private static void AddSqlParameter(SqlCommand command)
    SqlParameter parameter = new SqlParameter("@Description", 
        SqlDbType.VarChar, 88, "Description");
    parameter.IsNullable = true;
    parameter.Direction = ParameterDirection.Output;


.NET Framework
Available since 1.1
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