datagridview组合条件查询

[{"title":"（ 265 个子文件 2.95MB ） datagridview组合条件查询","children":[{"title":"MySchool.mdf_log.LDF <span style='color:#111;'> 560.00KB </span>","children":null,"spread":false},{"title":"MySchool_log.LDF <span style='color:#111;'> 1024.00KB </span>","children":null,"spread":false},{"title":"CommonQueryTest1.vshost.exe.config <span style='color:#111;'> 507B </span>","children":null,"spread":false},{"title":"CommonQueryTest1.exe <span style='color:#111;'> 70.50KB </span>","children":null,"spread":false},{"title":"CommonQueryTest1.pdb <span style='color:#111;'> 149.50KB </span>","children":null,"spread":false},{"title":"......","children":null,"spread":false},{"title":"<span style='color:steelblue;'>文件过多，未全部展示</span>","children":null,"spread":false}],"spread":true}]