C# ASP.NET Web 应用程序消息框

ASP.NET Web Application Message Box

提问by Baxter

In an asp.net windows forms application, in the C# code behind you can use:

在 asp.net windows 窗体应用程序中，您可以在后面的 C# 代码中使用：

MessageBox.Show("Here is my message");

Is there any equivalent in a asp.net web application? Can I call something from the C# code behind that will display a message box to the user?

asp.net web 应用程序中是否有任何等价物？我可以从后面的 C# 代码中调用一些东西来向用户显示一个消息框吗？

Example usage of this: I have a button that loads a file in the code behind. When the file is loaded or if there is an error I would like to popup a message to the user stating the result.

示例用法：我有一个按钮，可以在后面的代码中加载文件。当文件加载或出现错误时，我想向用户弹出一条消息，说明结果。

Any ideas on this?

对此有何想法？

采纳答案by Gage

You want to use an Alert. Unfortunately it's not as nice as with windows forms.

您想使用警报。不幸的是，它不如 Windows 窗体好。

ClientScript.RegisterStartupScript(this.GetType(), "myalert", "alert('" + myStringVariable + "');", true);

Similar to this question here: http://forums.asp.net/t/1461308.aspx/1

类似于这里的这个问题：http: //forums.asp.net/t/1461308.aspx/1

回答by ek_ny

not really. Server side code is happening on the server--- you can use javascript to display something to the user on the client side, but it obviously will only execute on the client side. This is the nature of a client server web technology. You're basically disconnected from the server when you get your response.

并不真地。服务器端代码发生在服务器上——您可以使用 javascript 在客户端向用户显示某些内容，但它显然只会在客户端执行。这是客户端服务器网络技术的本质。当您收到响应时，您基本上与服务器断开了连接。

回答by Yahia

There are several options to create a client-side messagebox in ASP.NET - see here, hereand herefor example...

有几个选项可以在 ASP.NET 中创建客户端消息框 -例如，请参见此处、此处和此处...

回答by Shree

Why should not use jquery popup for this purpose.I use bpopupfor this purpose.See more about this.
http://dinbror.dk/bpopup/

为什么不应该为此目的使用 jquery 弹出窗口。我为此目的使用bpopup。查看更多相关信息。
http://dinbror.dk/bpopup/

回答by Saeb Amini

There are a few solutions; if you are comfortable with CSS, here's a very flexible solution:

有几个解决方案；如果您对 CSS 感到满意，这里有一个非常灵活的解决方案：

Create an appropriately styled Panelthat resembles a "Message Box", put a Labelin it and set its Visibleproperty to false. Then whenever the user needs to see a message aftera postback (e.g. pushing a button), from codebehind set the Labels Textproperty to the desired error message and set the Panel's Visibleproperty to true.

创建一个Panel类似“消息框”的适当样式，将 aLabel放入其中并将其Visible属性设置为false。然后每当用户需要在回发（例如按下按钮）后查看消息时，从代码隐藏将LabelsText属性设置为所需的错误消息并将Panel'sVisible属性设置为true。

回答by anu

Right click the solution explorer and choose the add reference.onedialog box will be appear. On that select (.net)-> System.windows.form. Imports System.Windows.Forms (vb)and using System.windows.forms(C#)copy this in your coding and then write messagebox.show("").

右键单击解决方案资源管理器并选择reference.one将出现添加对话框。在那个选择(.net)-> System.windows.form。在您的编码中导入System.Windows.Forms (vb)并使用System.windows.forms(C#)复制此内容，然后编写messagebox.show("").

回答by arakami

Just add the namespace:

只需添加命名空间：

System.Windows.forms 

to your web application reference or what ever, and you have the access to your:

到您的 Web 应用程序参考或其他任何内容，您可以访问您的：

MessageBox.Show("Here is my message");

I tried it and it worked.

我试过了，它奏效了。

Good luck.

祝你好运。

回答by user2678089

if you will include

如果你将包括

System.Windows.forms

as namespace then it will conflict . Use

作为命名空间，那么它将发生冲突。用

btn_click()
{

System.Windows.Forms.MessageBox.Show("Hello");

}

回答by Ali Humayun

Or create a method like this in your solution:

或者在您的解决方案中创建一个这样的方法：

public static class MessageBox {
    public static void Show(this Page Page, String Message) {
       Page.ClientScript.RegisterStartupScript(
          Page.GetType(),
          "MessageBox",
          "<script language='javascript'>alert('" + Message + "');</script>"
       );
    }
}

Then you can use it like:

然后你可以像这样使用它：

MessageBox.Show("Here is my message");

回答by Pabinator

Just for the records.

只是为了记录。

Here is a link from Microsoftthat I think is the best way to present a MessageBoxin ASP.Net

这是来自 Microsoft 的链接，我认为这是在ASP.Net 中呈现MessageBox的最佳方式

Also it presents choices like Yesand NO.

它还提供了Yes和NO等选项。

Instructions on how to get the class from the linkworking on your project:

有关如何从处理您的项目的链接获取课程的说明：

1. If you don't have an App_Codefolder on your Project, create it.
2. Right click the App_Codefolder and create a Class. Name it MessageBox.cs
3. Copy the text from the MessageBox.csfile (from the attached code) and paste it on your MessageBox.csfile.
4. Do the same as steps 2 & 3 for the MessageBoxCore.csfile.
5. Important:Right click each file MessageBox.csand MessageBoxCore.csand make sure the 'Build Action'is set to Compile

6. Add this code to your aspxpage where you want to display the message box:

   <asp:Literal ID="PopupBox" runat="server"></asp:Literal>
   

7. Add this code on you cspage where you want to decision to be made:

   string title = "My box title goes here";
   string text = "Do you want to Update this record?";
   MessageBox messageBox = new MessageBox(text, title, MessageBox.MessageBoxIcons.Question, MessageBox.MessageBoxButtons.YesOrNo, MessageBox.MessageBoxStyle.StyleA);
   messageBox.SuccessEvent.Add("YesModClick");
   PopupBox.Text = messageBox.Show(this);
   

8. Add this method to your cspage. This is what will be executed when the user clicks Yes. You don't need to make another one for the NoClickmethod.

   [WebMethod]
   public static string YesModClick(object sender, EventArgs e)
   {
       string strToRtn = "";
       // The code that you want to execute when the user clicked yes goes here
       return strToRtn;
   }
   

9. Add a WebUserControl1.ascxfile to your root path and add this code to the file:

   <link href="~/Styles/MessageBox.css" rel="stylesheet" type="text/css" />
   <div id="result"></div>
   <asp:ScriptManager runat="server" ID="scriptManager" EnablePageMethods="True">
   </asp:ScriptManager>  //<-- Make sure you only have one ScriptManager on your aspx page.  Remove the one on your aspx page if you already have one.
   

10. Add this line on top of your aspxpage:

    <%@ Register src="~/MessageBoxUserControl.ascx" tagname="MessageBoxUserControl" tagprefix="uc1" %>
    

11. Add this line inside your aspxpage (Inside your asp:Contenttag if you have one)

    <uc1:MessageBoxUserControl ID="MessageBoxUserControl1" runat="server" />
    

12. Save the image files 1.jpg, 2.jpg, 3.jpg, 4.jpgfrom the Microsoft project above into your ~/Images/path.

13. Done

1. 如果您的项目中没有App_Code文件夹，请创建它。
2. 右键单击App_Code文件夹并创建一个类。将其命名为MessageBox.cs
3. 从MessageBox.cs文件（来自附加代码）复制文本并将其粘贴到MessageBox.cs文件中。
4. 对MessageBoxCore.cs文件执行与步骤 2 和 3 相同的操作。
5. 重要提示：右键单击每个文件MessageBox.cs和MessageBoxCore.cs并确保“构建操作”设置为“编译”

6. 将此代码添加到要显示消息框的aspx页面：

   <asp:Literal ID="PopupBox" runat="server"></asp:Literal>
   

7. 在您要做出决定的cs页面上添加此代码：

   string title = "My box title goes here";
   string text = "Do you want to Update this record?";
   MessageBox messageBox = new MessageBox(text, title, MessageBox.MessageBoxIcons.Question, MessageBox.MessageBoxButtons.YesOrNo, MessageBox.MessageBoxStyle.StyleA);
   messageBox.SuccessEvent.Add("YesModClick");
   PopupBox.Text = messageBox.Show(this);
   

8. 将此方法添加到您的cs页面。这是当用户单击 Yes 时将执行的操作。您不需要为该NoClick方法制作另一个。

   [WebMethod]
   public static string YesModClick(object sender, EventArgs e)
   {
       string strToRtn = "";
       // The code that you want to execute when the user clicked yes goes here
       return strToRtn;
   }
   

9. 将WebUserControl1.ascx文件添加到您的根路径并将此代码添加到文件中：

   <link href="~/Styles/MessageBox.css" rel="stylesheet" type="text/css" />
   <div id="result"></div>
   <asp:ScriptManager runat="server" ID="scriptManager" EnablePageMethods="True">
   </asp:ScriptManager>  //<-- Make sure you only have one ScriptManager on your aspx page.  Remove the one on your aspx page if you already have one.
   

10. 在您的aspx页面顶部添加此行：

    <%@ Register src="~/MessageBoxUserControl.ascx" tagname="MessageBoxUserControl" tagprefix="uc1" %>
    

11. 在你的aspx页面中添加这一行（在你的asp:Content标签中，如果你有的话）

    <uc1:MessageBoxUserControl ID="MessageBoxUserControl1" runat="server" />
    

12. 将上述1.jpg, 2.jpg, 3.jpg, 4.jpgMicrosoft 项目中的图像文件保存到您的~/Images/路径中。

13. 完毕

Hope it helps.

希望能帮助到你。

Pablo

巴勃罗