Possible Duplicate:
C#: why does the string type have a .ToString() method
为什么在<代码>String类别(VB.NET)中存在一种<编码>方法?
String.ToString()
如果它像现在这样使用,它就是一个间接费用。
TextBox.Text.ToString()
Possible Duplicate:
C#: why does the string type have a .ToString() method
为什么在<代码>String类别(VB.NET)中存在一种<编码>方法?
String.ToString()
如果它像现在这样使用,它就是一个间接费用。
TextBox.Text.ToString()
<代码>ToString方法见。 目标代码> 继承<编码>。 <代码>目标. 编码代码>的实施工作将印刷该类型名称。
public virtual string ToString() {
return this.GetType().ToString();
}
<代码>String高于这一方法返回本国。
public override string ToString() {
return this;
}
准则TextBox.Text.ToString(>
无必要地要求ToString
,但这样做不可能产生任何可证明的业绩影响。
All objects have ToString()
, so that for any object:
您可在不知悉<代码>obj的类型的情况下打电话。
you can call obj.ToString()
without having to worry about the method not being there (generic logging code is a common example of where you might do this)
插图上的<条码>电话/代码>的间接费用只是要求使用一条线功能,因此几乎肯定可以忽略。
它或许是一比多余的,而。 指出,它将重归同一案件。 因此,除了采用这种方法外,没有这方面的履约间接费用。
一切物体(或可装箱成物体)object
界定了< 编码>ToString, ergo, string has a ToString means, as it s a Object.
Because the System.String
class, like any other class is derived from the System.Object
class,
it automatically inherits from various methods like :
public virtual bool Equals(Object obj)
public virtual int GetHashCode()
public virtual string ToString()
因此,你能够比较、填写表格和标语,并将喷气式喷气机变成便于人使用的地方。
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