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I'm trying to pass a string with special characters to your web api but is giving error.

Below the line where I pass the values ​​pro web api:

 string listaParcelaSeparadoVirgula = null; foreach (var item in listaParcelas) { listaParcelaSeparadoVirgula = listaParcelaSeparadoVirgula + ";;" + item; } var result = HttpUtility.UrlEncode(listaParcelaSeparadoVirgula); var response = client.PostAsJsonAsync("api/LancamentoReceitaDespesa/AddLancamentoParcelar/" + result, lancamentoReceitaDespesa).Result;

the result is a string variable with values ​​separated by ";;". Below the contents of the string:

 ";;aaaaa 1/2||10/01/2014|100,00||;;aaaaa 2/2||10/02/2014|100,00||"

with UrlEncode:

"%3b%3baaaaa+1%2f2%7c%7c10%2f01%2f2014%7c100%2c00%7c%7c%3b%3baaaaa+2%2f2%7c%7c10%2f02%2f2014%7c100%2c00%7c%7c"

Error:

{"Error while copying content to a stream."}

How can I pass these values ​​pro web api?

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  • Why are you passing the value in the URL and in the body? Is that really necessary? I don't think it is the URI that is complaining, it is the JSON.Net serialization that is having a problem. Commented Jan 10, 2014 at 12:31

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Well you could try encode value with base64 since in url you could have special symbols 

 var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(result); var response = client.PostAsJsonAsync("api/LancamentoReceitaDespesa/AddLancamentoParcelar/" + System.Convert.ToBase64String(plainTextBytes), lancamentoReceitaDespesa).Result;

then in web 

public void AddLancamentoParcelar(string base64EncodedData) { var base64EncodedBytes = System.Convert.FromBase64String(base64EncodedData); var result = System.Text.Encoding.UTF8.GetString(base64EncodedBytes); }

I am not sure if its the best solution but as you could have any symbol in url then its could be an solution.

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