使用Http请求获取网络中的图像

下面的GetBitmap函数输入网络图像文件的Uri，返回指定的图像，如：GetBitmap("https://i-blog.csdnimg.cn/blog_migrate/62ee91db938fb3a50675192cea4b17ff.gif ")返回百度的图标。

    Shared Function GetBitmap(ByVal Uri As String) As Bitmap

        Try

            Dim oWebReq As WebRequest = System.Net.WebRequest.Create(Uri)

            Dim oWebRep As WebResponse = oWebReq.GetResponse

            Dim btMap As Bitmap = Nothing

            Try

                btMap = New Bitmap(oWebRep.GetResponseStream)

            Catch ex As Exception

 

            End Try

            Return btMap

        Catch ex As Exception

            Return Nothing

        End Try

    End Function