how to use C Sharp, Fade out of display the image.

如何淡入淡出显示图像
....................\Example
....................\.......\bin
....................\.......\...\Debug
....................\.......\Example.csproj
....................\.......\Form1.cs
....................\.......\Form1.Designer.cs
....................\.......\Form1.resx
....................\.......\obj
....................\.......\...\Debug
....................\.......\...\Example.csproj.FileList.txt
....................\.......\Program.cs
....................\.......\Properties
....................\.......\..........\AssemblyInfo.cs
....................\.......\..........\Resources.Designer.cs
....................\.......\..........\Resources.resx
....................\.......\..........\Settings.Designer.cs
....................\.......\..........\Settings.settings
....................\Example.sln

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