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Home/ Questions/Q 6840261
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Editorial Team
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Editorial Team
Asked: May 26, 20262026-05-26T23:49:16+00:00 2026-05-26T23:49:16+00:00

I have an ASP.NET 4.0 aspx page from which I wish to send an

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I have an ASP.NET 4.0 aspx page from which I wish to send an email to the recipient specified in a text box named “supervisoremailTextBox”. Is there any way that I can specify a variable as the recipient email address. The code I have used which doesn’t work is shown below:

MailAddress fromAddress = new MailAddress("address@domain.co.uk", "Sender Name");
MailAddress toAddress = new MailAddress("supervisoremailTextBox.Value");
message.From = fromAddress;
message.To.Add(toAddress); 

Sorry if this a really dumb question and thanks in advance for your help.

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  1. Editorial Team
    Editorial Team
    2026-05-26T23:49:16+00:00Added an answer on May 26, 2026 at 11:49 pm

    When you use MailAddress, you need to use a valid email address.

    The string "supervisoremailTextBox.Value" is not a valid email address.

    If you mean to use the value of a textbox with the ID supervisoremailTextBox, use:

    MailAddress toAddress = new MailAddress(supervisoremailTextBox.Value);
    

    Note that I have dropped the " to ensure you are not passing in a string.

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