Question

我想使用以下方法删除视图状态。我的问题是我不喜欢它将下面的代码放入几乎每一页。我喜欢将其移动到母版页或将其转换为类并从母版页运行它。以下代码适用于非母版页。如果我放入主页CS0115：'MasterPage.SavePageStateToPersistenceMedium（object）'：它没有找到合适的方法来覆盖

#region Disable ViewState
protected override void SavePageStateToPersistenceMedium(object state)
{
}
protected override object LoadPageStateFromPersistenceMedium()
{
    return null;
}
#endregion

Answer 1

你应该将它放在一个基类中，让你不希望viewstate从你的每个页面继承它

//a basepage that overrides the methods
public class BasePage : System.Web.UI.Page
{
  protected override void SavePageStateToPersistenceMedium(object state)
  {
  }
  protected override object LoadPageStateFromPersistenceMedium()
  {
      return null;
  }
}

//your page class that inherits your base page
public class Page1 : BasePage
{
}

Answer 2

<% EnableViewState="false" %>

你可以在每个页面上设置这个EnableViewState="false"，这将禁用该特定页面上的视图状态，但如果你想让任何控件启用视图状态，你可以通过相同的{{{ 1}}在那个控件上。

Answer 3

每个页面都有一个不使用ViewState的选项。

<asp:Page EnableViewState="True|False" />

Answer 4

    //using the below you will need to change  asp:ImageButton coding method. You need to convert it to a regular submit button. There may be other problems which i don't now yet.

将下面的代码放在母版页上。

     protected override void Render(HtmlTextWriter writer)
    {///Articles/How-to-disable-or-remove-ViewState-Hidden-Field-in-ASP.Net-Page.aspx
        StringBuilder sb = new StringBuilder();
        StringWriter sw = new StringWriter(sb);
        HtmlTextWriter ht = new HtmlTextWriter(sw);
        base.Render(ht);
        string html = sb.ToString();
        //The remove the value and it id from the view status this next line
        html = Regex.Replace(html, "<input[^>]*id=\"(__VIEWSTATE)\"[^>]*>", "<input type=\"hidden\" name=\"__VIEWSTATE\" value=\"\"/>", RegexOptions.IgnoreCase);
        //To completely remove the view state use the line below
       // html = Regex.Replace(html, "<input[^>]*id=\"(__VIEWSTATE)\"[^>]*>", "", RegexOptions.IgnoreCase);
        writer.Write(html);
        sb = null; html = null; ht.Dispose(); sw.Dispose();
    }

使用此技术检测aspx页面（而非母版页）上的单击按钮。将此代码放在后面的代码中 if（Request.Form [“nonPostBackButton1.y”]！= null） { Response.Write（“ nonPostBackButton1只需按下”）; }

        if (Request.Form["nonPostBackButton2.y"] != null)
        {
            Response.Write("<br/><b>nonPostBackButton2 is just pressed</b>");
        }

这是图像提交按钮的示例

<input type="image" alt="nonPostBackButton1"  name="nonPostBackButton1"/>&nbsp; Use this method instead of the postback buttons. This is the image submit button 1</p>
<p><input type="image" alt="nonPostBackButton2"  name="nonPostBackButton2"/>&nbsp; Use this method instead of the postback buttons. This is the image submit button 1</p>

将代码移动到母版页SavePageStateToPersistenceMedium＆amp;的LoadPageStateFromPersistenceMedium

4 个答案: