调用符号选择弹框，符号库文件导入后不显示
SymbolDialog symbolDialog = new SymbolDialog();
Resources resources = new Resources();
// 将符号库文件导入到符号库中
resources.FillLibrary.FromFile(@"D:\DevelopUtils\SuperMap\SuperMap iDesktop 10i\Templates\SymbolLibrary\FillLibrary3D.bru");
symbolDialog.Resources = resources;
