get textbox value in the ashx file

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dear sir/ma'am

i have a textbox in my web form .which is for student roll no.
sir i want to get image through this roll no for which i uses .ashx handler

sir how can i pass this text box value in the .ashx handler help me for this

Posted 7-Jun-13 22:54pm

ankur789

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ridoy · Answer 1 · 2013-06-07T23:11:00

Solution 1

See..
working with generic Handler (.ashx ) page[^]
http://www.devcurry.com/2010/11/call-aspnet-handler-ashx-using.html[^]

Posted 7-Jun-13 23:11pm

ridoy

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ankur789 8-Jun-13 5:34am

first link i referred but there is a problem because i am using vb as default language so
HttpContext.Current("key") = me.textbox1.text

shows an error as
cannot be indexed beacause it has no default value

Marc Gabrie · Answer 2 · 2013-06-09T02:28:00

Convert the textbox val to base64 and pass it to the handler through a query string param:

1. From your aspx page:

MyImage.ImageUrl = "~/myHandler.ashx?data=" + Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(MyTextBox.Text))

2. In your handler:

Dim textBase64 As String = context.Request("data")

Dm text As String = System.Text.Encoding.UTF8.GetString(Convert.FromBase64String(textBase64))