flex之DataGrid增、删、改、查

注：我使用的是Flash Builder 4.6

参考文章：http://blog.csdn.net/ycf330/article/details/3862072

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flex对DataGrid进行增、删、改、查的大致步骤:

1.定义数据源。

2.DataGrid绑定数据源。

3.对数据源进行增删改查

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界面截图:

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定义数据源acUser

//记得导入包：import mx.collections.ArrayCollection;

[Bindable]  
public var acUser:ArrayCollection=new ArrayCollection([
{id:"1",account:"Anho",pass:"653487"}, 
{id:"2",account:"Beha",pass:"328756"}, 
{id:"3",account:"Canv",pass:"987056"}  
]); 

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DataGrid绑定数据源acUser：

<s:DataGrid id="dgTest" x="609" y="186" width="333" dataProvider="{acUser}" requestedRowCount="4"
selectionChange="dgTest_selectionChangeHandler(event)">
<s:columns>
<s:ArrayList>
<s:GridColumn datafield="id" headerText="编号"></s:GridColumn>
<s:GridColumn datafield="account"headerText="账号"></s:GridColumn>
<s:GridColumn datafield="pass" headerText="密码"></s:GridColumn>
</s:ArrayList>
</s:columns>
</s:DataGrid>

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对数据源进行增删改查：

                        //添加
			protected function button1_clickHandler(event:MouseEvent):void
			{
				acUser.addItem({id:txtId.text,account:txtAccount.text,pass:txtPass.text});
			}
			
			//删掉所选
			protected function button2_clickHandler(event:MouseEvent):void
			{
				var idx:int=acUser.getItemIndex(dgTest.selectedItem);
				acUser.removeItemAt(idx);
			}
			
			//修改所选
			protected function button3_clickHandler(event:MouseEvent):void
			{
				var item:Object=dgTest.selectedItem;
				item.id=txtId.text;
				item.account=txtAccount.text;
				item.pass=txtPass.text;
				acUser.itemUpdated(item);
			}
			
			//查找
			protected function button4_clickHandler(event:MouseEvent):void
			{
				//根据id来查找
				var id:int=int(txtId.text);
				for(var i:int=0;i<acUser.length;i++)
					{
						if(acUser.getItemAt(i).id==id)
						{
							txtId.text=acUser.getItemAt(i).id
							txtAccount.text=acUser.getItemAt(i).account;
							txtPass.text=acUser.getItemAt(i).pass;
						}
					}
			}
			
			//项选择发生改变时
			protected function dgTest_selectionChangeHandler(event:GridSelectionEvent):void
			{
				txtId.text=dgTest.selectedItem.id;
				txtAccount.text=dgTest.selectedItem.account;
				txtPass.text=dgTest.selectedItem.pass;
			}

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您的十分满意是我追求的宗旨。

您的一点建议是我后续的动力。