ASP.NET MVC将ActionLink中的字符串传递给控制器

本文关键字：字符串 控制器 NET MVC ActionLink ASP | 更新日期: 2023-09-27 18:15:56

向控制器传递参数为空。从例子中我看到我正确地使用了重载。任何帮助，非常感谢

@{
foreach (string str in ViewBag.ServerNames)
{
    <ul> 
     <img src="../../Content/Images/my_computer.png" alt="Computer Name"/>
        <li >@Html.ActionLink(linkText: str.ToString(),actionName: "Index",controllerName:"Customer",
        routeValues:new{str = str.ToString()} , htmlAttributes: null)</li>
    </ul>
}

} 

public ActionResult Index(string conName)
    {
        Response.Write("con name = " + conName);
        Response.End();
        string con = ConfigurationManager.ConnectionStrings[conName].ConnectionString;
        trakman_Entities db = new trakman_Entities(con);
        return View(db.customers.ToList());
    }

浏览器源代码

 <ul> 
     <img src="../../Content/Images/my_computer.png" alt="Computer Name"/>
        <li ><a href="/Customer/Index/DefaultConnection">DefaultConnection</a></li>
    </ul>
    <ul> 
     <img src="../../Content/Images/my_computer.png" alt="Computer Name"/>
        <li ><a href="/Customer/Index/trakman_Entities">trakman_Entities</a></li>
    </ul>
    <ul> 
     <img src="../../Content/Images/my_computer.png" alt="Computer Name"/>
        <li ><a href="/Customer/Index/trakman_Entities1">trakman_Entities1</a></li>
    </ul>

ASP.NET MVC将ActionLink中的字符串传递给控制器

您应该在操作链接中提供正确的参数名称，此处不需要指定参数:)

@{
foreach (string str in ViewBag.ServerNames)
{
    <ul> 
     <img src="../../Content/Images/my_computer.png" alt="Computer Name"/>
        <li >@Html.ActionLink(str.ToString(),"Index","Customer",
        new{conName= str.ToString()} , null)</li>
    </ul>
}

如果您正在使用MVC开箱即用，那么它只可能与一个名为id的参数一起工作，该参数接受int。要做到这一点，您需要在URL中显式地定义参数，如下所示:

<a href="/Customer/Index/?conName=trakman_Entities">trakman_Entities</a>
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