Csharp 如何读取TagHelper属性的文本值

发布于11月27日

我想获取指定属性名称的字符串文本？例如: 我有一个TagHelper:

public class CustomControl: TagHelper
{
[HtmlAttributeName("Items")]
public IEnumerable<object> DataItems { get; set; }

public async override Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
{
   string stringText=datatitems.GetType()??? //it should result "listDataBC"
}

然后在任何页面上使用:

<customcontrol Items="listDataBC"/>

谢谢

推荐答案

您可以使用ModelExpression作为参数，并使用"@listDataBC"来获取名称和值.
CustomControl.cs

    public class CustomControl : TagHelper
    {
        [HtmlAttributeName("Items")]
        public ModelExpression expression { get; set; }

        public async override Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
        {
        
            var name = expression.Name;
            var value = expression.Model; 
        }
    }

Index.cshtml

@{
    var listDataBC = new List<object>()
    {
        new {Name="tom"},
        new {Name="kite"}
    };
}
<custom-control Items="@listDataBC"></custom-control>

Test result