主题：SQLGroupTableBuilder

对后台数据进行分组统计时，统计的实工时间已分钟为单位，如何把分钟单位换算成小时单位。

b.Groups.AddDef("加工人") '根据产品分组
b.Totals.AddDef("实工") '对数量进行统计
b.Totals.AddExp("小时", "实工 / 60") 

提示：统计错误，错误原因：输出别名‘金额’重复。

For Each dt As DataTable In DataTables
    dt.Save()
Next
Dim Filter As String
Dim b As New SQLGroupTableBuilder("完成工时统计", "工艺内容")
b.C
Dim ymd1 As WinForm.DateTimePicker = e.Form.Controls("DateTimePicker03")
Dim ymd2 As WinForm.DateTimePicker = e.Form.Controls("DateTimePicker04")
If ymd1.Value IsNot Nothing AndAlso ymd2.Value IsNot Nothing Then
    Filter = "{工艺内容}.完成加工日期 >=  #" & ymd1.value & "# And {工艺内容}.完成加工日期 <= #" & ymd2.value & "#"
    If Filter > "" Then
        b.Filter = Filter
    End If
End If
b.Groups.AddDef("加工人") '根据产品分组
b.Totals.AddDef("实工") '对数量进行统计
b.Totals.AddExp("小时", "实工 / 60")
b.Build '生成统计表
Maintable = Tables("完成工时统计") '打开生成的统计表
If b.Filter <> Nothing Then
    b.Build()
    Dim Book As New XLS.Book(ProjectPath & "Attachments\完成工时统计.xls")
    Dim fl As String = ProjectPath & "Reports\完成工时统计\完成工时统计-" & "-" & Date.Today & ".xls"
    Dim Sheet As XLS.Sheet = Book.Sheets(0)
    Book.Build() '生成报表
    Book.Save(fl)
    Dim Proc As New Process
    Proc.File = fl
    Proc.Start()
End If

工艺内容是主表

 

此主题相关图片如下：1.png

数据库是access,按7楼方法改正后，还是一样。没有b.Totals.AddExp("小时", "实工 / 60")这句代码时候，可生成统计表，工时是已以分钟为单位。
此主题相关图片如下：11 (2).png

For Each dt As DataTable In DataTables
    dt.Save()
Next
Dim Filter As String
Dim b As New SQLGroupTableBuilder("完成工时统计", "工艺内容")
b.C
Dim ymd1 As WinForm.DateTimePicker = e.Form.Controls("DateTimePicker03")
Dim ymd2 As WinForm.DateTimePicker = e.Form.Controls("DateTimePicker04")
If ymd1.Value IsNot Nothing AndAlso ymd2.Value IsNot Nothing Then
   Filter = "完成加工日期 >=  #" & ymd1.value & "# And 完成加工日期 <= #" & ymd2.value & "#"
    If Filter > "" Then
        b.Filter = Filter
    End If
End If
b.Groups.AddDef("加工人") '根据产品分组
b.Totals.AddDef("实工") '对数量进行统计
b.Totals.AddExp("小时", "实工 / 60")
b.Build '生成统计表
Maintable = Tables("完成工时统计") '打开生成的统计表
If b.Filter <> Nothing Then
    b.Build()
    Dim Book As New XLS.Book(ProjectPath & "Attachments\完成工时统计.xls")
    Dim fl As String = ProjectPath & "Reports\完成工时统计\完成工时统计-" & "-" & Date.Today & ".xls"
    Dim Sheet As XLS.Sheet = Book.Sheets(0)
    Book.Build() '生成报表
    Book.Save(fl)
    Dim Proc As New Process
    Proc.File = fl
    Proc.Start()
End If

此主题相关图片如下：11 (1).png

换个名称也一样，删除项目所在的文件夹里的bin目录，然后重启项目试试还是不行，我另外新建一个项目，测试是正常的。

.NET Framework 版本：4.0.30319.1
Foxtable 版本：2024.11.1.1
错误所在事件：窗口,报表,Button25,Click
详细错误信息：
Object reference not set to an instance of an object.

关闭项目时，出现报警

此主题相关图片如下：11.png

See the end of this message for details on invoking

just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************

System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize ---> System.Configuration.ConfigurationErrorsException: Root element is missing. (C:\Users\ZYH\AppData\Local\Foxtable(狐表)\foxtable.exe_Url_vk30pfvrxszhxnnss1q2ykh1jwdh1e4i\2024.11.1.1\user.config) ---> System.Xml.XmlException: Root element is missing.

   at System.Xml.XmlTextReaderImpl.Throw(Exception e)

   at System.Xml.XmlTextReaderImpl.ParseDocumentContent()

   at System.Xml.XmlTextReaderImpl.Read()

   at System.Xml.XmlTextReader.Read()

   at System.Configuration.XmlUtil..ctor(Stream stream, String name, Boolean readToFirstElement, ConfigurationSchemaErrors schemaErrors)

   at System.Configuration.BaseConfigurationRecord.InitConfigFromFile()

   --- End of inner exception stack trace ---

   at System.Configuration.ConfigurationSchemaErrors.ThrowIfErrors(Boolean ignoreLocal)

   at System.Configuration.BaseConfigurationRecord.ThrowIfParseErrors(ConfigurationSchemaErrors schemaErrors)

   at System.Configuration.BaseConfigurationRecord.ThrowIfInitErrors()

   at System.Configuration.ClientConfigurationSystem.OnConfigRemoved(Object sender, InternalConfigEventArgs e)

   --- End of inner exception stack trace ---

   at System.Configuration.ConfigurationManager.PrepareConfigSystem()

   at System.Configuration.ConfigurationManager.RefreshSection(String sectionName)

   at System.Configuration.ClientSettingsStore.ReadSettings(String sectionName, Boolean isUserScoped)

   at System.Configuration.LocalFileSettingsProvider.GetPropertyValues(SettingsContext context, SettingsPropertyCollection properties)

   at System.Configuration.SettingsBase.GetPropertiesFromProvider(SettingsProvider provider)

   at System.Configuration.SettingsBase.GetPropertyValueByName(String propertyName)

   at System.Configuration.SettingsBase.get_Item(String propertyName)

   at System.Configuration.ApplicationSettingsBase.GetPropertyValue(String propertyName)

   at System.Configuration.ApplicationSettingsBase.get_Item(String propertyName)

   at Foxtable.jc.Ooo0O0O_.o_O.(Object A_0, FormClosedEventArgs A_1)

   at System.Windows.Forms.FormClosedEventHandler.Invoke(Object sender, FormClosedEventArgs e)

   at System.Windows.Forms.Form.OnFormClosed(FormClosedEventArgs e)

   at System.Windows.Forms.Form.WmClose(Message& m)

   at System.Windows.Forms.Form.WndProc(Message& m)

   at C1.Win.C1Ribbon.C1RibbonForm.WndProc(Message& m)

   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)

   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)

   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)