c# - 从 C# 调用 JavaScript

Question

我需要使用 javascript 函数来显示和隐藏我页面上的元素，但从 C# 方法中调用它。这可能吗？

编辑:我尝试了 RegisterStartupScript(见下文)，但这并没有像我希望的那样隐藏元素:

HidePopup("CompanyHQSetup", "$('#<%=DivDataProvider.ClientID %>').hide();$('#<%=modalOverlay.ClientID %>').hide();");

private void HidePopup(string Key, string jscript)
    {
        string str = "";
        str += "<script language='javascript'>";
        str += jscript;
        str += "</script>";
        RegisterStartupScript(Key, jscript);
    }

编辑:通过使用隐藏字段 bool 值来确定是否隐藏或显示元素来解决这个问题

Answer 1

是的，查看RegisterClientScriptBlock .

这是从该链接中摘录的片段:

  public void Page_Load(Object sender, EventArgs e)
  {
    // Define the name and type of the client script on the page.
    String csName = "ButtonClickScript";
    Type csType = this.GetType();

    // Get a ClientScriptManager reference from the Page class.
    ClientScriptManager cs = Page.ClientScript;

    // Check to see if the client script is already registered.
    if (!cs.IsClientScriptBlockRegistered(csType, csName))
    {
      StringBuilder csText = new StringBuilder();
      csText.Append("<script type=\"text/javascript\"> function DoClick() {");
      csText.Append("Form1.Message.value='Text from client script.'} </");
      csText.Append("script>");
      cs.RegisterClientScriptBlock(csType, csName, csText.ToString());
    }
  }