CODEWITHSUNDEEP
vb.netstring
Som Bhattacharyya
Som Bhattacharyya

Reputation: 4112

Why does String.Format give inputString not formatted error for this String

So i have a VB.net String here that looks as such below. I have another string startId that i wish is substituted in the appropriate places. So i wrote the following lines.

Dim jsonPayloadHeaderFormat As String = "Content-Type: application/json;charset=UTF-8" & "\r\n" & "Content-ID: {0}" & "\r\n" & "Content-Disposition: attachment; filename={0}" & "\r\n" & "{" & "\r\n"
    String.Format(jsonPayloadHeaderFormat, startId)

But i get a input string not in correct format error. I am new to vb.net and can't seem to get it. Please advise.

Upvotes: 2

Views: 220

Answers (1)

Tim Schmelter
Tim Schmelter

Reputation: 460238

Because of the {\r\n at the end. { indidcates that you want to begin a new element. Opening and closing braces are required. Read the remarks section.

You also have to assign the new string which is returned from String.Format to a string variable:

Dim jsonPayloadHeaderFormat As String = "Content-Type: application/json;charset=UTF-8" & "\r\n" & "Content-ID: {0}" & "\r\n" & "Content-Disposition: attachment; filename={0}" & "\r\n\r\n"
Dim result As String = String.Format(jsonPayloadHeaderFormat, startId)

Upvotes: 2

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