How can I display a messagebox in ASP.NET?

Question

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:

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)

Please stop eating exceptions, use using instead of manual finally. Than update post with the exception message that was eatten and also add tags related to what you are using to render pages (ASP.Net, WebForms, MVC,...). — Alexei Levenkov
– Alexei Levenkov, Commented Mar 4, 2013 at 7:19
@Maris there is no exception. all data is getting inserted into DB. Only message is not showing — Freelancer
– Freelancer, Commented Mar 4, 2013 at 7:36
Please don't build your sql command with user values, use parameters instead. Read up on sql injection — Hans Keﬆing
– Hans Keﬆing, Commented Oct 18, 2020 at 8:18

Hitesh Bavaliya · Accepted Answer · 2013-03-04 09:25:02Z

31

@freelancer If you are using ScriptManager then try this code for message..

string script = "alert(\"Hello!\");";
ScriptManager.RegisterStartupScript(this, GetType(), 
                      "ServerControlScript", script, true);

answered Mar 4, 2013 at 9:25

Hitesh Bavaliya

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1 Comment

Prasath Govind Over a year ago

Say I have a variable string filename = "Hello"; how to display the content of string per se? will string script = "alert(filename);"; work?

daniele3004 · Accepted Answer · 2015-10-20 13:27:23Z

18

Make a method of MsgBox in your page.

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

MsgBox("! your message !", this.Page, this);

edited Oct 20, 2015 at 13:27

daniele3004

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answered Dec 20, 2013 at 6:57

Harsh Varudkar

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Comments

Md. Arafat Al Mahmud · Accepted Answer · 2013-03-04 07:37:34Z

14

just try this, it works fine in my browser:

your response writing code should be

Response.Write("<script>alert('login successful');</script>");

Hope this works

answered Mar 4, 2013 at 7:37

Md. Arafat Al Mahmud

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Comments

Andrew Morton · Accepted Answer · 2022-10-03 16:53:35Z

3

You can use a clientscript: Microsoft-ClientScript.RegisterOnSubmitStatement.

String scriptText = 
        "alert('sdsd');";
    ClientScript.RegisterOnSubmitStatement(this.GetType(), 
        "ConfirmSubmit", scriptText);

try this

ClientScript.RegisterStartupScript(this.GetType(), "JSScript", scriptText); 



ClientScript.RegisterClientScriptBlock(this.GetType(), "alert", scriptText); //use this

edited Oct 3, 2022 at 16:53

Andrew Morton

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answered Mar 4, 2013 at 7:23

Ravi Gadag

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Comments

coderz · Accepted Answer · 2015-03-26 15:30:24Z

2

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!

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);    
    }

edited Mar 26, 2015 at 15:30

coderz

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answered Mar 26, 2015 at 15:02

Sapna Kumar

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Comments

Fer García · Accepted Answer · 2019-05-02 20:14:16Z

2

I use this and it works

public void Messagebox(string xMessage)
{
    Response.Write("<script>alert('" + xMessage + "')</script>");
}

And I call like this

    Messagebox("je suis la!");

edited May 2, 2019 at 20:14

Fer García

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answered May 2, 2019 at 19:18

user11443545

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Comments

BenMorel · Accepted Answer · 2014-01-07 16:15:36Z

1

create a simple JavaScript function having one line of code-"alert("Hello this is an Alert")" and instead on OnClick() ,use OnClientClick() method.

`<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>`

edited Jan 7, 2014 at 16:15

BenMorel

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answered Aug 20, 2013 at 10:51

Amit

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Comments

Mario · Accepted Answer · 2016-11-10 13:56:15Z

Using AJAX Modal Popup and creating a Message Box Class:

Messsage Box Class:

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:

  #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:

On the header add reference (just for some style)

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet">

On the Content:

<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:

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);

        }

Komal12 · Accepted Answer · 2017-06-27 08:49:59Z

1

Response.Write is used to display the text not for executing JavaScript, If you want to execute the JavaScript from your code than try as below:

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();
}

edited Jun 27, 2017 at 8:49

Komal12

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answered Mar 4, 2013 at 7:27

Rohit Vyas

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1 Comment

Freelancer Over a year ago

Not working. Is there any browser setting which i need to change?

ricardo130 · Accepted Answer · 2018-12-11 04:14:03Z

1

This method works fine for me:

private void alert(string message)
{
    Response.Write("<script>alert('" + message + "')</script>");
}

Example:

protected void Page_Load(object sender, EventArgs e)
{
    alert("Hello world!");
}

And when your page load yo will see something like this:

I'm using .NET Framework 4.5 in Firefox.

edited Dec 11, 2018 at 4:14

answered Dec 11, 2018 at 4:08

ricardo130

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Comments

Ole Albers · Accepted Answer · 2016-08-02 07:53:19Z

0

Try This Code:Successfully

Written on click Button.

ScriptManager.RegisterStartupScript(this, GetType(),"alertMessage", "alert('Record Inserted Successfully');", true);

edited Aug 2, 2016 at 7:53

Ole Albers

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answered Aug 2, 2016 at 7:27

Arvind More

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1 Comment

JimHawkins Over a year ago

please look at How to Answer

Peter · Accepted Answer · 2016-10-08 18:29:36Z

0

The best solution is a minimal use of java directly in the visualstudio GUI

here it is: On a button go to the "OnClientClick" property (its not into events*) overthere type:

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:

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

answered Oct 8, 2016 at 18:29

Peter

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Comments

PeteGO · Accepted Answer · 2024-07-02 19:02:27Z

0

For VB users

Public Sub MessageBox(xMessage As String)
    Response.Write("<script>alert('" + xMessage + "')</script>")
End Sub

Usage:

MessageBox("your message here")

edited Jul 2, 2024 at 19:02

PeteGO

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answered Jul 2, 2024 at 18:32

Sohail Nasir

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Comments

Ak1429 · Accepted Answer · 2019-09-18 05:17:21Z

-1

Alert message with redirect

Response.Write("<script language='javascript'>window.alert('Popup message ');window.location='webform.aspx';</script>");

Only alert message

Response.Write("<script language='javascript'>window.alert('Popup message ')</script>");

edited Sep 18, 2019 at 5:17

answered Sep 17, 2019 at 7:30

Ak1429

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