测试没问题
Dim str As String = "base64字符串数据............."
Dim bs As Byte() = Convert.FromBase64String(str.Replace("data:image/png;base64,", ""))
Dim stream As System.IO.Stream = New System.IO.MemoryStream(bs)
Dim bmp As System.Drawing.Bitmap = New System.Drawing.Bitmap(stream)
bmp.save("d:\123.jpg")
[此贴子已经被作者于2023/3/14 15:13:07编辑过]