c#-4.0 - 如何修改可为空类型的值？

Question

public partial class L2SEntity {
    public void Scale(double d) {
        if (this.Amount.HasValue)
            this.Amount.Value *= d;
    }
}

导致以下错误:

Error   2   Property or indexer 'System.Nullable<double>.Value' cannot be assigned to -- it is read only

如何更改金额的( double 类型？)值？

Answer 1

直接赋值就行了。

public partial class L2SEntity {
    public void Scale(double d) {
        if (this.Amount.HasValue) {
            this.Amount *= d;
        }
    }
}