C# 无法强制转换对象类型"；System.Web.Mvc.HtmlHelper`1[System.Object]"；输入“；System.Web.Mvc.HtmlHelper“；

我正在mvc asp.net项目中使用DevExpress控件。以下是查看代码：

<div>
    @Html.DevExpress().TextBox(settings =>
    {
        settings.Name = "TextBox";
        settings.Width = 170;
        settings.Properties.DisplayFormatString = "[ 00 - 00 - 00 ]";
        settings.Text = "123456";
    }).GetHtml()
</div>

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我无法理解我的代码在哪里失败，因为这是来自DevExpress演示的示例代码。

Ty代表链接，Nitin Varpe。我已将此部分添加到我的主web.config中：

<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
    <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="4.0.0.0" />
    </dependentAssembly>
</assemblyBinding>
</runtime>

检查此链接

<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
    <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="4.0.0.0" />
    </dependentAssembly>
</assemblyBinding>
</runtime>