Infopath組合框選擇項目，但在其他組合框中選擇的項目除外

Question

我有一個InfoPath表單，其中部門作爲重複表格輸入，所有部門都在此輸入。

然後我有第二個重複表，用戶輸入。該行由3列組成：用戶名字符串，UserDepartmentCombo1（可從查找部門的下拉列表中選擇）和CoveragePathCombo2下拉列表（再次從部門列表中查找）。

通過InfoPath中輸出XML如下：

<?xml version="1.0" encoding="UTF-8"?> 
<?mso-infoPathSolution solutionVersion="1.0.0.6" productVersion="15.0.0" PIVersion="1.0.0.0" href="file:///C:\Users\user\Desktop\test.xsn" name="urn:schemas-microsoft-com:office:infopath:test:-myXSD-2012-10-21T13-16-52" ?> 
<?mso-application progid="InfoPath.Document" versionProgid="InfoPath.Document.4"?> 
<my:myFields xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2012-10-21T13:16:52" xmlns:xd="http://schemas.microsoft.com/office/infopath/2003" xml:lang="en-gb"> 
    <my:group1> 
    <my:Departments> 
     <my:DeptName>Accounts</my:DeptName> 
     <my:field3>false</my:field3> 
    </my:Departments> 
    <my:Departments> 
     <my:DeptName>Sales</my:DeptName> 
     <my:field3>false</my:field3> 
    </my:Departments> 
    <my:Departments> 
     <my:DeptName>Support</my:DeptName> 
     <my:field3>false</my:field3> 
    </my:Departments> 
    <my:Departments> 
     <my:DeptName>Reception</my:DeptName> 
     <my:field3>false</my:field3> 
    </my:Departments> 
    </my:group1> 
    <my:group2> 
    <my:Users> 
     <my:UserDepartment>Sales</my:UserDepartment> 
     <my:Username>Chris</my:Username> 
     <my:CoveragePath>Reception</my:CoveragePath> 
    </my:Users> 
    <my:Users> 
     <my:UserDepartment>Sales</my:UserDepartment> 
     <my:Username>Jon</my:Username> 
     <my:CoveragePath>Accounts</my:CoveragePath> 
    </my:Users> 
    </my:group2> 
</my:myFields> 

我CoveragePath組合框的XPath如下：/my:myFields/my:group1/my:Departments/my:DeptName

我想組合框CoveragePath下拉到不包括在選擇部門行UserDepartment組合框，我將如何去做這件事？

Answer 1

使用：你需要通過對被任何$selected

/my:myFields/my:group1/my:Departments/my:DeptName[not(. = $selected)] 

在第一個組合框中選擇。