加载完成后运行一个函数

问题描述

大家好

我有这个代码:

hi all

i have this code:

<pre lang="vb">Dim tester As New BitmapImage<br />
        Dim imgplate As String = "approot.test.png"<br />
        Dim Strm As Stream = Me.GetType().Assembly.GetManifestResourceStream(imgplate)<br />
        tester.BeginInit()<br />
        tester.StreamSource = Strm<br />
        tester.EndInit()<br />
        imgPreview.Source = tester<br />
</pre><br />

从嵌入式资源加载图像，如果我从button_click事件调用它，它将起作用，但是如果我从slider_valuechanged事件调用，它将给我这个错误:

to load an image from an embedded resource and it works will if i called it from a button_click event, but if i called it from a slider_valuechanged event it will give me this error:

Property ''UriSource'' or property ''StreamSource'' must be set

在imgpreview.source

所以我认为滑块是在嵌入资源之前加载的??，如果是，我该如何解决，欢迎您提出任何想法:)

on the imgpreview.source

so i think that the slider is loaded before the embedded resource??, if yes how can i work around that, any ideas will be welcome :)

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