根据键值对设置组合框的selecteditem. [英] Set the selecteditem of a combobox based on key,value pair.

问题描述

我有一个像这样填充的组合框:

I have a combobox that I populate like this:

this.reqTypeInput.Items.Add(new RequestType("Label 1", "Value1"));
this.reqTypeInput.Items.Add(new RequestType("Label 2", "value2"));
this.reqTypeInput.Items.Add(new RequestType("Label 3", "value3"));

我的 RequestType 类是:

My RequestType class is:

class RequestType
{
    public string Text { get; set; }
    public string Value { get; set; }

    public RequestType(string text, string val)
    {
        Text = text;
        Value = val;
    }

    public override string ToString()
    {
        return Text;
    }
}

我有一个值，例如Value1".如何将组合框的 selectedItem 设置为对象 {Label 1, Value1}?

I have a value, "Value1" for example. How can I set the selectedItem of the combobox to the object {Label 1, Value1}?

我试过了:

this.reqTypeInput.SelectedIndex = this.reqTypeInput.Items.IndexOf("Value1");

推荐答案

如果请求类型不变，您可以先将每个 RequestType 对象存储在一个变量中，然后设置 SelectedItem 属性的 ComboBox 到该变量.

If the request types do not change, you could store each RequestType object in a variable first, then set the SelectedItem property of the ComboBox to that variable.

例如:

RequestType type1 = New RequestType("Label 1", "Value 1");
RequestType type2 = New RequestType("Label 2", "Value 2");

reqTypeInput.Items.Add(type1);
reqTypeInput.Items.Add(type2);

然后，像这样设置:

reqTypeInput.SelectedItem = type2;

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