传递int数组作为参数，web用户控件 [英] Passing int array as parameter in web user control

问题描述

我有一个int数组作为Web用户控件的属性。我想设置该属性，内联，如果可以使用的语法如下：

I have an int array as a property of a Web User Control. I'd like to set that property inline if possible using the following syntax:

<uc1:mycontrol runat="server" myintarray="1,2,3" />

这将在运行时失败，因为它会期待一个实际的int数组，而是一个字串被代替通过。我可以让 myintarray 字符串，并以二传手解析它，但我想知道是否有一个更好的解决方案。

This will fail at runtime because it will be expecting an actual int array, but a string is being passed instead. I can make myintarray a string and parse it in the setter, but I was wondering if there was a more elegant solution.

推荐答案

实现一个类型转换器，这里是一，警告：快速和放大器;脏，不用于生产用途，等等：

Implement a type converter, here is one, warning : quick&dirty, not for production use, etc :

public class IntArrayConverter : System.ComponentModel.TypeConverter
{
    public override bool CanConvertFrom(System.ComponentModel.ITypeDescriptorContext context, Type sourceType)
    {
    	return sourceType == typeof(string);
    }
    public override object ConvertFrom(System.ComponentModel.ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
    {
    	string val = value as string;
    	string[] vals = val.Split(',');
    	System.Collections.Generic.List<int> ints = new System.Collections.Generic.List<int>();
    	foreach (string s in vals)
    		ints.Add(Convert.ToInt32(s));
    	return ints.ToArray();
    }
}

和标签控件的属性：

private int[] ints;
[TypeConverter(typeof(IntsConverter))]
public int[] Ints
{
    get { return this.ints; }
    set { this.ints = value; }
}

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