如何更新字典值; [英] How to update dictionary value;

问题描述

我有

Dictionary<int, myClass> ActiveTabIndex = new Dictionary<int, myClass>();

public class myClass
    {
        public int TabIndex { get; set; }
        public string OdSessionId { get; set; }
        public string TextBoxValue { get; set; }
    }

i我正在为字典添加值

i am adding value to dictionary like

ActiveTabIndex.Add(1, new myClass{ TabIndex = 1, OdSessionId = "S", TextBoxValue=""});

现在我想要为Key 1更新TextBoxValue，

喜欢

now i want to update TextBoxValue for Key 1,
like

ActiveTabIndex[1] = new myClass{ TextBoxValue="something"};

但是将其他值重置为默认值，

如何更新特定键的字典值而不用覆盖其他价值。



我尝试过：

but its Resting the other value to default,
How Can I update The value of dictionary for the specific key with out overriding Other value.

What I have tried:

ActiveTabIndex[1] = new myClass{ TextBoxValue="something"};

但是正在更新其他值toi default

But Is Updating The Other value toi default

推荐答案

因为您正在创建一个具有新状态的新对象，但您只需要更新当前对象的状态。



你需要这样做：

Because you are creating a new object with new state but you need to just update the state of current object.

You need to do it this way :

ActiveTabIndex[1].TextBoxValue="something";

现在你将只保留其他属性值更新的实例的 TextBoxValue 属性。



希望它能帮助你理解。

Now you will have just TextBoxValue property of the instance updated with the other properties value retained.

Hope it helps you understand.

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