ASP.NET Web Application Message Box

ASP.NET Web Application Message Box

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

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

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

How can I display a messagebox in ASP.NET?

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

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

How to show MessageBox on asp.net?

MessageBox doesn't exist in ASP.NET. If you need functionality in the browser, like showing a message box, then you need to opt for javascript. ASP.NET provides you with means to inject javascript which gets rendered and executed when the html sent to the browser's loaded and displayed. You can use the following code in the Page_Load for example:

Type cstype = this.GetType();

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

// Check to see if the startup script is already registered.
if (!cs.IsStartupScriptRegistered(cstype, "PopupScript"))
{
    String cstext = "alert('Hello World');";
    cs.RegisterStartupScript(cstype, "PopupScript", cstext, true);
}

This sample's taken from MSDN.

Display Success Message Box in ASP.NET C#

MessageBox.Show("Successfully saved", " Student Record", MessageBoxButtons.OK, MessageBoxIcon.Information);

How can I show a message box on a web page before redirect to another web page in asp.net?

You'll want to do the redirect on the client side after the alert:

protected void ButtonSubmit_Click(object sender, EventArgs e)
{    
    ClientScript.RegisterStartupScript(this.GetType(), "myalert", "alert('The data was written!'); window.location.replace('Login.aspx');", true);
}

Confirmation message box in webapplication

I think you are going about this the wrong way. You should display this confirmation before posting back, and then only post back if they choose to "Apply".

Using ASP.NET web controls, the Button control has an OnClientClick property which can be used to call javascript prior to Http POST:

You could do something like this:

<asp:button id="btn"
            runat="server"
            Text="Apply"
            OnClientClick="return confirm('Are you sure you wish to apply?');"
            OnClick="btn_Click" />

Javascript popup message didn't work in asp.net web application using MasterPage

 Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Erroe " + myMessage + "');", true);

use this

How to show/display message box in C# asp.net forms?

Use:

string display = "Pop-up!";
            ClientScript.RegisterStartupScript(this.GetType(), "yourMessage", "alert('" + display + "');", true);

how to show alert box after successful insert using C#

YES OR NO MessageBox

Buttons, Message Box, and Confirm Box in ASP.NET 3.5

Easiest way to do a message box with an ok button??

How to show MessageBox in ASP.NET (CSASPNETMessageBox)

Message Boxes in ASP.NET (MVC) Web Application

You can use ModelState for add custom error message

if (String.IsNullOrEmpty(dateSearchBegin) || String.IsNullOrEmpty(dateSearchEnd))
 {
   ModelState.AddModelError("CustomError", "Both date fields are required");
 }

End show in view:

@Html.ValidationMessage("CustomError")

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