Add your code to the dataset's partial class file.
向数据集的分部类文件中添加代码.
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Select Add to existing file to generate the classes code into an existing class file.
选择“添加到现有文件”以在现有类文件中生成类代码.
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The class file'% 1'specified as the code behind for'% 2'could not be loaded.
未能加载被指定为“%2 ” 的代码隐藏的类文件“%1 ”.
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