'第一步引用命令空间[这步最重要的]
Imports <xmlns="http://schemas.microsoft.com/sqlserver/reporting/2005/01/reportdefinition">
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
'加载RDLC文件[记得引用命名空间]。
Dim feedXML As XDocument = XDocument.Load("D:\HjSoft\R01单.rdlc")
'循环访问节点。
For Each result In feedXML.<Report>.<Body>.<ReportItems>.<Textbox>
'判断节点的属性。
If result.@Name = "textbox3" Then
'节点下的节点。
Dim B = result.<Value>
'修改值
B.Value = Now.ToString
End If
Next
'保存修改后的记录。
feedXML.Save("D:\HjSoft\R01单.rdlc")
End Sub
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搞了一天才知道怎么一回事，希望对其它人有所帮助。
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付上XML文件内容。
<?xml version="1.0" encoding="utf-8"?>
<Report xmlns="http://schemas.microsoft.com/sqlserver/reporting/2005/01/reportdefinition" xmlns:rd="http://schemas.microsoft.com/SQLServer/reporting/reportdesigner">
<InteractiveHeight>29.7cm</InteractiveHeight>
<rd:DrawGrid>true</rd:DrawGrid>
<InteractiveWidth>21cm</InteractiveWidth>
<rd:GridSpacing>0.25cm</rd:GridSpacing>
<rd:SnapToGrid>true</rd:SnapToGrid>
<rd:ReportID>8f248b67-8dd9-4553-9946-ab6210b7a7d6</rd:ReportID>
<PageWidth>21.72cm</PageWidth>
<Code/>
<Width>21.6cm</Width>
<Body>
<ColumnSpacing>1cm</ColumnSpacing>
<ReportItems>
<Textbox Name="textbox3">
<rd:DefaultName>textbox3</rd:DefaultName>
<Visibility>
<Hidden>true</Hidden>
</Visibility>
<Top>3cm</Top>
<Width>9.75cm</Width>
<Style>
<FontFamily>宋体</FontFamily>
<PaddingLeft>2pt</PaddingLeft>
<PaddingRight>2pt</PaddingRight>
<PaddingTop>2pt</PaddingTop>
<PaddingBottom>2pt</PaddingBottom>
</Style>
<ZIndex>2</ZIndex>
<CanGrow>true</CanGrow>
<Left>0.25cm</Left>
<Height>0.63492cm</Height>
<Value>2008.07.17 18:06:25</Value>
</Textbox>
<Textbox Name="textbox2">
<rd:DefaultName>textbox2</rd:DefaultName>
<Top>1.5cm</Top>
<Width>9.75cm</Width>
<Style>
<FontFamily>宋体</FontFamily>
<PaddingLeft>2pt</PaddingLeft>
<PaddingRight>2pt</PaddingRight>
<PaddingTop>2pt</PaddingTop>
<PaddingBottom>2pt</PaddingBottom>
</Style>
<ZIndex>1</ZIndex>
<CanGrow>true</CanGrow>
<Left>0.25cm</Left>
<Height>1.25cm</Height>
<Value>文本框2的第一行内容。</Value>
</Textbox>
<Textbox Name="textbox1">
<rd:DefaultName>textbox1</rd:DefaultName>
<Top>0.5cm</Top>
<Width>9.75cm</Width>
<Style>
<FontFamily>宋体</FontFamily>
<PaddingLeft>2pt</PaddingLeft>
<PaddingRight>2pt</PaddingRight>
<PaddingTop>2pt</PaddingTop>
<PaddingBottom>2pt</PaddingBottom>
</Style>
<CanGrow>true</CanGrow>
<Left>0.25cm</Left>
<Height>0.63492cm</Height>
<Value>文本框1的文本内容。</Value>
</Textbox>
</ReportItems>
<Height>13.9cm</Height>
</Body>
<Language>zh-CN</Language>
<PageHeight>13.97cm</PageHeight>
</Report>
