主题：单引号、双引号问题

各位新年好！

Dim a As String  = MainTable.Name
Dim b As DataRow  = DataTables("基础设置").Find("[主表] = '" & a & "'")
Dim c As String  = ConfigBar.Items("组合框1").Text.SubString(0,3)
Dim d As WinForm.TreeView = Forms("'" & b("窗口") & "'").Controls("TreeView1")
d.BuildDataTree("定额库","定额 = '" & c & "'","章","节","W")

上面的代码中红色部分有问题，想要打开窗口1中的目录树，出现下面窗口：


此主题相关图片如下：窗口.jpg

谢谢他爸！