C# 如何在 ASP.NET 中显示消息框？
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How can I display a messagebox in ASP.NET?
提问by Freelancer
I want to show a message box on the successful save of any item. I googled it and tried different solutions, but none of them worked. Here is the code I am using:
我想在成功保存任何项目时显示一个消息框。我用谷歌搜索并尝试了不同的解决方案，但都没有奏效。这是我正在使用的代码：
try
{
con.Open();
string pass="abc";
cmd = new SqlCommand("insert into register values('" +
txtName.Text + "','" +
txtEmail.Text + "','" +
txtPhoneNumber.Text + "','" +
ddlUserType.SelectedText + "','" +
pass + "')", con);
cmd.ExecuteNonQuery();
con.Close();
Response.Write("<script LANGUAGE='JavaScript' >alert('Login Successful')</script>");
}
catch (Exception ex)
{
}
finally
{
con.Close();
}
(I am using Firefox, if that matters)
（如果这很重要，我正在使用 Firefox）
采纳答案by Hitesh Bavaliya
@freelancer If you are using ScriptManager then try this code for message..
@freelancer 如果您使用的是 ScriptManager，请尝试使用此代码获取消息..
string script = "alert(\"Hello!\");";
ScriptManager.RegisterStartupScript(this, GetType(),
"ServerControlScript", script, true);
回答by Ravi Gadag
you can use clientscript. MSDN : Clientscript
您可以使用客户端脚本。MSDN：客户端脚本
String scriptText =
"alert('sdsd');";
ClientScript.RegisterOnSubmitStatement(this.GetType(),
"ConfirmSubmit", scriptText);
try this
尝试这个
ClientScript.RegisterStartupScript(this.GetType(), "JSScript", scriptText);
ClientScript.RegisterClientScriptBlock(this.GetType(), "alert", scriptText); //use this
回答by Rohit Vyas
Response.Writeis used to display the text not for executing JavaScript, If you want to execute the JavaScript from your code than try as below:
Response.Write用于显示不用于执行 JavaScript 的文本，如果您想从代码中执行 JavaScript，请尝试如下操作：
try
{
con.Open();
string pass="abc";
cmd = new SqlCommand("insert into register values('" + txtName.Text + "','" + txtEmail.Text + "','" + txtPhoneNumber.Text + "','" + ddlUserType.SelectedText + "','" + pass + "')", con);
cmd.ExecuteNonQuery();
con.Close();
Page.ClientScript.RegisterStartupScript(this.GetType(), "click","alert('Login Successful');");
}
catch (Exception ex)
{
}
finally
{
con.Close();
}
回答by Md. Arafat Al Mahmud
just try this, it works fine in my browser:
试试这个，它在我的浏览器中运行良好：
your response writing code should be
您的响应编写代码应该是
Response.Write("<script>alert('login successful');</script>");
Hope this works
希望这有效
回答by Amit
create a simple JavaScript function having one line of code-"alert("Hello this is an Alert")" and instead on OnClick() ,use OnClientClick() method.
创建一个简单的 JavaScript 函数，它只有一行代码——“alert("Hello this is an Alert")”，然后在 OnClick() 上使用 OnClientClick() 方法。
`<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script type="text/javascript" language="javascript">
function showAlert() {
alert("Hello this is an Alert")
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="showAlert()" />
</div>
</form>
</body>
</html>`
回答by Harsh Varudkar
Make a method of MsgBox in your page.
在您的页面中创建一个 MsgBox 方法。
public void MsgBox(String ex, Page pg,Object obj)
{
string s = "<SCRIPT language='javascript'>alert('" + ex.Replace("\r\n", "\n").Replace("'", "") + "'); </SCRIPT>";
Type cstype = obj.GetType();
ClientScriptManager cs = pg.ClientScript;
cs.RegisterClientScriptBlock(cstype, s, s.ToString());
}
and when you want to use msgbox just put this line
当你想使用 msgbox 时，只需放置这一行
MsgBox("! your message !", this.Page, this);
回答by Sapna Kumar
This code will help you add a MsgBox in your asp.net file. You can change the function definition to your requirements. Hope this helps!
此代码将帮助您在 asp.net 文件中添加 MsgBox。您可以根据需要更改函数定义。希望这可以帮助！
protected void Addstaff_Click(object sender, EventArgs e)
{
if (intClassCapcity < intCurrentstaffNumber)
{
MsgBox("Record cannot be added because max seats available for the " + (string)Session["course_name"] + " training has been reached");
}
else
{
sqlClassList.Insert();
}
}
private void MsgBox(string sMessage)
{
string msg = "<script language=\"javascript\">";
msg += "alert('" + sMessage + "');";
msg += "</script>";
Response.Write(msg);
}
回答by Arvind More
Try This Code:Successfully
试试这个代码：成功
Written on click Button.
写在点击按钮上。
ScriptManager.RegisterStartupScript(this, GetType(),"alertMessage", "alert('Record Inserted Successfully');", true);
回答by user3800527
The best solution is a minimal use of java directly in the visualstudio GUI
最好的解决方案是在visualstudio GUI中直接使用最少的java
here it is: On a button go to the "OnClientClick" property (its not into events*) overthere type:
这是：在按钮上转到“OnClientClick”属性（它不是事件*）在那里输入：
return confirm('are you sure?')
it will put a dialog with cancel ok buttons transparent over current page if cancel is pressed no postback will ocure. However if you want only ok button type:
如果按下取消，它将在当前页面上放置一个带有取消确定按钮透明的对话框，不会发生回发。但是，如果您只想要确定按钮类型：
alert ('i told you so')
The events like onclick work server side they execute your code, while OnClientClick runs in the browser side. the come most close to a basic dialog
像 onclick 工作服务器端的事件会执行您的代码，而 OnClientClick 则在浏览器端运行。最接近基本对话
回答by Mario
Using AJAX Modal Popup and creating a Message Box Class:
使用 AJAX 模态弹出窗口并创建一个消息框类：
Messsage Box Class:
消息框类：
public class MessageBox
{
ModalPopupExtender _modalPop;
Page _page;
object _sender;
Panel _pnl;
public enum Buttons
{
AbortRetryIgnore,
OK,
OKCancel,
RetryCancel,
YesNo,
YesNoCancel
}
public enum DefaultButton
{
Button1,
Button2,
Button3
}
public enum MessageBoxIcon
{
Asterisk,
Exclamation,
Hand,
Information,
None,
Question,
Warning
}
public MessageBox(Page page, object sender, Panel pnl)
{
_page = page;
_sender = sender;
_pnl = pnl;
_modalPop = new ModalPopupExtender();
_modalPop.ID = "popUp";
_modalPop.PopupControlID = "ModalPanel";
}
public void Show(String strTitle, string strMessage, Buttons buttons, DefaultButton defaultbutton, MessageBoxIcon msbi)
{
MasterPage mPage = _page.Master;
Label lblTitle = null;
Label lblError = null;
Button btn1 = null;
Button btn2 = null;
Button btn3 = null;
Image imgIcon = null;
lblTitle = ((Default)_page.Master).messageBoxTitle;
lblError = ((Default)_page.Master).messageBoxMsg;
btn1 = ((Default)_page.Master).button1;
btn2 = ((Default)_page.Master).button2;
btn3 = ((Default)_page.Master).button3;
imgIcon = ((Default)_page.Master).messageBoxIcon;
lblTitle.Text = strTitle;
lblError.Text = strMessage;
btn1.CssClass = "btn btn-default";
btn2.CssClass = "btn btn-default";
btn3.CssClass = "btn btn-default";
switch (msbi)
{
case MessageBoxIcon.Asterisk:
//imgIcon.ImageUrl = "~/img/asterisk.jpg";
break;
case MessageBoxIcon.Exclamation:
//imgIcon.ImageUrl = "~/img/exclamation.jpg";
break;
case MessageBoxIcon.Hand:
break;
case MessageBoxIcon.Information:
break;
case MessageBoxIcon.None:
break;
case MessageBoxIcon.Question:
break;
case MessageBoxIcon.Warning:
break;
}
switch (buttons)
{
case Buttons.AbortRetryIgnore:
btn1.Text = "Abort";
btn2.Text = "Retry";
btn3.Text = "Ignore";
btn1.Visible = true;
btn2.Visible = true;
btn3.Visible = true;
break;
case Buttons.OK:
btn1.Text = "OK";
btn1.Visible = true;
btn2.Visible = false;
btn3.Visible = false;
break;
case Buttons.OKCancel:
btn1.Text = "OK";
btn2.Text = "Cancel";
btn1.Visible = true;
btn2.Visible = true;
btn3.Visible = false;
break;
case Buttons.RetryCancel:
btn1.Text = "Retry";
btn2.Text = "Cancel";
btn1.Visible = true;
btn2.Visible = true;
btn3.Visible = false;
break;
case Buttons.YesNo:
btn1.Text = "No";
btn2.Text = "Yes";
btn1.Visible = true;
btn2.Visible = true;
btn3.Visible = false;
break;
case Buttons.YesNoCancel:
btn1.Text = "Yes";
btn2.Text = "No";
btn3.Text = "Cancel";
btn1.Visible = true;
btn2.Visible = true;
btn3.Visible = true;
break;
}
if (defaultbutton == DefaultButton.Button1)
{
btn1.CssClass = "btn btn-primary";
btn2.CssClass = "btn btn-default";
btn3.CssClass = "btn btn-default";
}
else if (defaultbutton == DefaultButton.Button2)
{
btn1.CssClass = "btn btn-default";
btn2.CssClass = "btn btn-primary";
btn3.CssClass = "btn btn-default";
}
else if (defaultbutton == DefaultButton.Button3)
{
btn1.CssClass = "btn btn-default";
btn2.CssClass = "btn btn-default";
btn3.CssClass = "btn btn-primary";
}
FirePopUp();
}
private void FirePopUp()
{
_modalPop.TargetControlID = ((Button)_sender).ID;
_modalPop.DropShadow = true;
_modalPop.OkControlID = //btn 1 / 2 / 3;
_modalPop.CancelControlID = //btn 1 / 2 / 3;
_modalPop.BackgroundCssClass = "modalBackground";
_pnl.Controls.Add(_modalPop);
_modalPop.Show();
}
In my MasterPage code:
在我的 MasterPage 代码中：
#region AlertBox
public Button button1
{
get
{ return this.btn1; }
}
public Button button2
{
get
{ return this.btn2; }
}
public Button button3
{
get
{ return this.btn1; }
}
public Label messageBoxTitle
{
get
{ return this.lblMessageBoxTitle; }
}
public Label messageBoxMsg
{
get
{ return this.lblMessage; }
}
public Image messageBoxIcon
{
get
{ return this.img; }
}
public DialogResult res
{
get { return res; }
set { res = value; }
}
#endregion
In my MasterPage aspx:
在我的 MasterPage aspx 中：
On the header add reference (just for some style)
在标题上添加参考（仅用于某些样式）
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet">
On the Content:
在内容上：
<asp:Panel ID="ModalPanel" runat="server" style="display: none; position: absolute; top:0;">
<asp:Panel ID="pnlAlertBox" runat="server" >
<div class="modal-dialog" >
<div ID="modalContent" runat="server" class="modal-content">
<div class="modal-header">
<h4 class="modal-title" id="myModalLabel">
<asp:Label ID="lblMessageBoxTitle" runat="server" Text="This is the MessageBox Caption"></asp:Label>
</h4>
</div>
<div ID="modalbody" class="modal-body" style="width:800px; height:600px">
<asp:Image ID="img" runat="server" Height="20px" Width="20px"/>
<asp:Label ID="lblMessage" runat="server" Text="Here Goes My Message"></asp:Label>
</div>
<div class="modal-footer">
<asp:Button ID="btn1" runat="server" OnClick="btn_Click" CssClass="btn btn-default" Text="Another Button" />
<asp:Button ID="btn2" runat="server" OnClick="btn_Click" CssClass="btn btn-default" Text="Cancel" />
<asp:Button ID="btn3" runat="server" OnClick="btn_Click" CssClass="btn btn-primary" Text="Ok" />
</div>
</div>
</div>
</asp:Panel>
</asp:Panel>
And to call it from a button, button code:
并从按钮调用它，按钮代码：
protected void btnTest_Click(object sender, EventArgs e)
{
MessageBox msgBox = new MessageBox(this, sender, aPanel);
msgBox.Show("This is my Caption", "this is my message", MessageBox.Buttons.AbortRetryIgnore, MessageBox.DefaultButton.Button1, MessageBox.MessageBoxIcon.Asterisk);
}
