[C#]读文件

/// <summary>
/// 从文件读取公钥转公钥字符串
/// </summary>
/// <param name="Path">公钥文件路径</param>
public static string getPublicKeyStr(string Path)
{
StreamReader sr = new StreamReader(Path);
string pubkey = sr.ReadToEnd();
sr.Close();
if (pubkey != null)
{
pubkey = pubkey.Replace("-----BEGIN PUBLIC KEY-----", "");
pubkey = pubkey.Replace("-----END PUBLIC KEY-----", "");
pubkey = pubkey.Replace("\r", "");
pubkey = pubkey.Replace("\n", "");
}
return pubkey;
}

-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCnxj/9qwVfgoUh/y2W89L6BkRA
FljhNhgPdyPuBV64bfQNN1PjbCzkIM6qRdKBoLPXmKKMiFYnkd6rAoprih3/PrQE
B/VsW8OoM8fxn67UDYuyBTqA23MML9q1+ilIZwBC2AQ2UBVOrFXfFl75p6/B5Ksi
NG9zpgmLCUYuLkxpLQIDAQAB
-----END PUBLIC KEY-----