如何在delphi中将xml文件中的数据打开/加载到tcxgrid中?
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1 回答
1
首先,您没有提供任何 XML 数据,所以我使用了这个:
<?xml version="1.0"?>
<Tests>
<Test TestId="0001" TestType="CMD">
<Name>Convert number to string</Name>
<CommandLine>Examp1.EXE</CommandLine>
<Input>1</Input>
<Output>One</Output>
</Test>
<Test TestId="0002" TestType="CMD">
<Name>Find succeeding characters</Name>
<CommandLine>Examp2.EXE</CommandLine>
<Input>abc</Input>
<Output>def</Output>
</Test>
<Test TestId="0003" TestType="GUI">
<Name>Convert multiple numbers to strings</Name>
<CommandLine>Examp2.EXE /Verbose</CommandLine>
<Input>123</Input>
<Output>One Two Three</Output>
</Test>
<Test TestId="0004" TestType="GUI">
<Name>Find correlated key</Name>
<CommandLine>Examp3.EXE</CommandLine>
<Input>a1</Input>
<Output>b1</Output>
</Test>
<Test TestId="0005" TestType="GUI">
<Name>Count characters</Name>
<CommandLine>FinalExamp.EXE</CommandLine>
<Input>This is a test</Input>
<Output>14</Output>
</Test>
<Test TestId="0006" TestType="GUI">
<Name>Another Test</Name>
<CommandLine>Examp2.EXE</CommandLine>
<Input>Test Input</Input>
<Output>10</Output>
</Test>
</Tests>
Tha 数据与名为 test.xml 的 exe 文件一起保存
我使用一个属性来获取名称:
property XMLFileName: String read GetXMLFileName;
和实施:
function TForm8.GetXMLFileName: String;
begin
Result := ExtractFilePath(Application.ExeName) + 'test.xml';
end;
然后将 XML 文件转换为数据集:
procedure TForm8.DomToDataset(XMLNode: IXMLNode; Dataset: TDataset);
var
AttrNode: IXMLNode;
procedure CreateFields;
var
StringField: TStringField;
i: Integer;
ChildNode: IXMLNode;
begin
for i := 0 to AttrNode.ChildNodes.Count - 1 do
begin
ChildNode := AttrNode.ChildNodes.Get(i);
StringField := TStringField.Create(Dataset);
StringField.Size := 50;
StringField.FieldName := ChildNode.NodeName;
StringField.DisplayLabel := ChildNode.NodeName;
StringField.Dataset := Dataset;
StringField.Name := 'StringField' + IntToStr(Dataset.Fields.Count + 1);
end;
end;
var
i, J: Integer;
begin
Dataset.Close;
Dataset.Fields.Clear;
for i := 0 to XMLNode.ChildNodes.Count - 1 do
begin
AttrNode := XMLNode.ChildNodes.Get(i);
if Dataset.Fields.Count = 0 then
CreateFields;
Dataset.Open;
Dataset.Append;
try
for J := 0 to AttrNode.ChildNodes.Count - 1 do
Dataset.Fields[J].Value := AttrNode.ChildNodes.Get(J).NodeValue;
Dataset.Post;
except
Dataset.Cancel;
end;
end;
end;
它远非完美,但它为您提供了图片。最后,我们需要将它们绑定在一起:
procedure TForm8.FillGrid;
var
XMLDocument: TXMLDocument;
i: Integer;
begin
XMLDocument := TXMLDocument.Create(nil);
XMLDocument.LoadFromFile(XMLFileName);
XMLDocument.Active := True;
DomToDataset(XMLDocument.DocumentElement, dxMemData1);
FreeAndNil(XMLDocument);
dxMemData1.Active := True;
cxGrid1DBTableView1.DataController.CreateAllItems;
for i := 0 to cxGrid1DBTableView1.ColumnCount - 1 do
cxGrid1DBTableView1.Columns[i].ApplyBestFit();
end;
这是一个好的开始。因为我没有你的消息,所以我不能再靠近了。
于 2014-10-02T12:55:58.453 回答