C# 常用方法——base64字符串转图片

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其他常用方法详见：https://www.cnblogs.com/zhuanjiao/p/12060937.html

/// <summary>
/// base64编码的文本转为图片
/// </summary>
/// <param name="base64Str"></param>
/// <param name="savePath"></param>
public MemoryStream Base64StringToImage(string base64Str)
{
try
{
//将base64头部信息替换
base64Str = base64Str.Replace("data:image/png;base64,", "").Replace("data:image/jgp;base64,", "")
.Replace("data:image/jpg;base64,", "").Replace("data:image/jpeg;base64,", "");
byte[] arr = Convert.FromBase64String(base64Str);
using (MemoryStream ms = new MemoryStream(arr))
{
return ms;
}
}
catch (Exception ex)
{
throw ex;
}
}