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示例，窗口2，按钮代码是

Dim cmd As New SQLCommand

cmd.C

Dim Filter As StringDim cmd As New SQLCommand

cmd.C

With e.Form.Controls("ComboBox2")

If .Value IsNot Nothing Then

Filter = "标识 = '" & .Value & "'"

End If

End With

With e.Form.Controls("ComboBox1")

If .Value IsNot Nothing Then

If Filter > "" Then

Filter = Filter & " And "

End If

Filter = Filter & "姓名 = '" & .Value & "'"

End If

End With

If e.Form.Controls("CheckBox2").Checked = True ' 如果付款状态选择了"已付"

If Filter >"" Then

Filter = Filter & " And "

End If

Filter = Filter & "已申请 = True"

End If

If e.Form.Controls("CheckBox3").Checked = True ' 如果付款状态选择了"未付"

If Filter >"" Then

Filter = Filter & " And "

End If

Filter = Filter & "已申请 = False Or 已申请 Is Null"

End If

DataTables("实验室检查").LoadFilter = filter

DataTables("实验室检查").Load

"sql201407"是外部数据源，

出现提示

下载信息 [文件大小：下载次数： ]
点击浏览该文件:哦哦得.rar

若是内部表，则上述代码可以用，转为外部表，则出现上述提示

说是列名“true”无效

选择“全部”可以，选择“已申请”和“未申请”，则提示列名“true”无效

Dim Filter As String

With e.Form.Controls("ComboBox2")

If .Value IsNot Nothing Then

Filter = "标识 = '" & .Value & "'"

End If

End With

With e.Form.Controls("ComboBox1")

If .Value IsNot Nothing Then

If Filter > "" Then

Filter = Filter & " And "

End If

Filter = Filter & "姓名 = '" & .Value & "'"

End If

End With

If e.Form.Controls("CheckBox2").Checked = 1 ' 如果付款状态选择了"已付"

If Filter >"" Then

Filter = Filter & " And "

End If

Filter = Filter & "已申请 = 1"

End If

If e.Form.Controls("CheckBox3").Checked = 1 ' 如果付款状态选择了"未付"

If Filter >"" Then

Filter = Filter & " And "

End If

Filter = Filter & "已申请 = 0 Or 已申请 Is Null"

End If

DataTables("实验室检查").LoadFilter = filter

DataTables("实验室检查").Load

是不是这样改？

主题：查询的一个问题？