(tng) (tng) (tng) (tng) (tng) (tng)2.AlternatingItemTemplateQ交曉KQ代表偶数Item
(tng) (tng) (tng) (tng) (tng) (tng)3.HeaderTemplateQ页眉，在控件的最?br /> (tng) (tng) (tng) (tng) (tng) (tng)4.FooterTemplateQ页脚，在控件的最?br /> (tng) (tng) (tng) (tng) (tng) (tng)5.SeparatorTemplateQ分隔项Q位于各Item之间Q如使用<br/>实现各项换行
(tng) (tng) (tng)适用于：(x)
(tng) (tng) (tng) (tng) (tng) (tng)替代只读昄容器内容的@环，如将一个ResultSet昄成一张表?br /> (tng) (tng) (tng) (tng) (tng) (tng)HeaderTemplate中?lt;table><tr>QItemTemplate/AlternatingItemTemplate中?lt;td></td>QSeparatorTemplate中?lt;/tr><tr>QFooterTemplate中?lt;/tr></table>可以实现一?<table> 元素效果?br />
(tng) (tng) (tng)DataList控gQ?/strong>共有七个模板
(tng) (tng) (tng) (tng) (tng) (tng)6.SelectedItemTemplateQ选择?br /> (tng) (tng) (tng) (tng) (tng) (tng)7.EditItemTemplateQ编辑项
(tng) (tng) (tng)适用于：(x)
(tng) (tng) (tng) (tng) (tng) (tng)可编辑数?/strong>的显C，因此在普通的DataSource指定?006q??4日，需要绑定数据源的主键列(指定控g?strong>DataKeyField属??br /> (tng) (tng) (tng) (tng) (tng) (tng)该控件提供了(jin)多种事gQ由攑֜Item中的Button控gȀ发?br /> (tng) (tng) (tng) (tng) (tng) (tng)Button控g会(x)Ȁ发ItemCommand事gQ可通过传入的事件参数来引发其它事gQ例如用SelectedItem模板Q?br />
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) if (tng)(e.CommandName (tng) == (tng) " Select " ) (tng){ (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) // 判断Ȁ发事件的Button.CommandName
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) this .DataList1.SelectedIndex (tng) = (tng)e.Item.ItemIndex; (tng) (tng) // 让激发事件的行被选中
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)myDataBind(); (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) // q里需要进行重新绑?/span>
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)}
(tng) (tng) (tng) (tng)}
(tng) (tng) (tng) (tng) (tng) (tng)使用EditItemTemplate模板Q将Button.CommandName指定?edit"卛_?/font>
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) this .DataList1.SelectedIndex (tng) = (tng) - 1 ; (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) // 攑ּ选择
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) this .DataList1.EditItemIndex (tng) = (tng)e.Item.ItemIndex; (tng) (tng) (tng) (tng) // 让当前行q入~辑状?/span>
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)myDataBind();
(tng) (tng) (tng) (tng)}
(tng) (tng) (tng) (tng) (tng) (tng)在EditItemTemplate模板中可以将允许修改的列l定到子控g上，q放入两个ButtonQCommandName分别指定?update","cancel"与DataList的事件相对应Q再在对应的数据更新/攑ּ事g中编E即可?/font>
Cancel事g
(tng) (tng) (tng) (tng) protected (tng) void (tng)DataList1_CancelCommand( object (tng)source, (tng)DataListCommandEventArgs (tng)e) (tng){
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) this .DataList1.EditItemIndex (tng) = (tng) - 1 ; (tng) (tng) // 攑ּ~辑状?/span>
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)myDataBind();
(tng) (tng) (tng) (tng)}
Update事g
(tng) (tng) (tng) (tng) protected (tng) void (tng)DataList1_UpdateCommand( object (tng)source, (tng)DataListCommandEventArgs (tng)e) (tng){
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) string (tng)id (tng) = (tng) this .DataList1.DataKeys[e.Item.ItemIndex].ToString(); (tng) (tng) (tng) (tng) (tng) (tng) (tng) // 获取~辑行所对应的主?/span>
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)SqlConnection (tng)con (tng) = (tng)Db.getConnection();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) // Ҏ(gu)主键更新数据?/span>
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)SqlCommand (tng)cmd (tng) = (tng) new (tng)SqlCommand( " update (tng)vote (tng)set (tng)topic=@topic (tng)where (tng)vID=@vID " , (tng)con);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)SqlParameter (tng)p1 (tng) = (tng) new (tng)SqlParameter( " @topic " , (tng)SqlDbType.VarChar, (tng) 20 );
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)p1.Value (tng) = (tng)((TextBox)e.Item.FindControl( " txtTopic " )).Text.Trim();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)cmd.Parameters.Add(p1);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)SqlParameter (tng)p2 (tng) = (tng) new (tng)SqlParameter( " @vID " , (tng)SqlDbType.Int);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)p2.Value (tng) = (tng)id;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)cmd.Parameters.Add(p2);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)con.Open();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)cmd.ExecuteNonQuery();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)con.Close();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) this .DataList1.EditItemIndex (tng) = (tng) - 1 ; (tng) (tng) // 攑ּ~辑状?/span>
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)myDataBind();
(tng) (tng) (tng) (tng)}
(tng) (tng) (tng) (tng) (tng) (tng)Button控g的CommandName指定?delete"Q可Ȁ发数据删除事Ӟ(x)
Delete事g
(tng) (tng) (tng) (tng) protected (tng) void (tng)DataList1_DeleteCommand( object (tng)source, (tng)DataListCommandEventArgs (tng)e) (tng){
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) string (tng)id (tng) = (tng) this .DataList1.DataKeys[e.Item.ItemIndex].ToString(); (tng) (tng) (tng) (tng) (tng) (tng) (tng) // 获取~辑行所对应的主?/span>
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)SqlConnection (tng)con (tng) = (tng)Db.getConnection();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) // Ҏ(gu)主键更新数据?/span>
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)SqlCommand (tng)cmd (tng) = (tng) new (tng)SqlCommand( " delete (tng)vote (tng)where (tng)vID=@vID " , (tng)con);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)SqlParameter (tng)p1 (tng) = (tng) new (tng)SqlParameter( " @vID " , (tng)SqlDbType.Int);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)p1.Value (tng) = (tng)id;
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)cmd.Parameters.Add(p1);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)con.Open();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)cmd.ExecuteNonQuery();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)con.Close();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)myDataBind();
(tng) (tng) (tng) (tng)}
(tng) (tng) (tng) (tng) (tng) (tng)通常需要在Update/Delete按钮上加入确认，如果是静(rn)态提C可以直接在Button的属性中加入Q?/font>
ItemCreated事g(tng) (tng) (tng) (tng)protected (tng)void (tng)DataList1_ItemCreated(object (tng)sender, (tng)DataListItemEventArgs (tng)e) (tng){
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)//此事件表C的是Item的徏?而在不同的模板中是会(x)有不同的呈现形式?因此需要对当前的状态进行判?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)//该delete按钮是在正常览状态下?在select/edit状态下q不存在
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)if (tng)(e.Item.ItemType (tng)== (tng)ListItemType.Item (tng)|| (tng)e.Item.ItemType (tng)== (tng)ListItemType.AlternatingItem) (tng){
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)string (tng)s1 (tng)= (tng)"return (tng)confirm('你确认要删除QＤ=";
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)s1 (tng)= (tng)s1 (tng)+ (tng)DataBinder.Eval(e.Item.DataItem, (tng)"vID");
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)s1 (tng)= (tng)s1 (tng)+ (tng)"的投吗Q?);";
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)((Button)e.Item.FindControl("btnDelete")).Attributes.Add("onClick", (tng)s1);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)}
(tng) (tng) (tng) (tng)}
(tng) (tng) (tng) (tng) (tng) (tng)q样一来就可以在ButtonȀ发DataList的事件之前进行简单的认?jin)，不过需要注意的是：(x) (tng) (tng) (tng)排序Q?/strong>
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng).用这U方式时Q在q行时如果有错误?strong>不会(x)有什么提C消?/strong>的，而且程直接向下q行Q?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng).如果同时使用?jin)两U，那么Button上的OnClientClick属性优先?br />
(tng) (tng) (tng) (tng) (tng) (tng)该控件的昄方式也与Repeater控g大不相同Q它的显C方式分????两种Q默认用表布局?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)使用表布局时控件会(x)自动生成一?lt;table>元素Q样式则由各模板对应?lt;style>指定Q在该控件的q用中不应该再用如Repeater那种自构?lt;table>元素的方法，因ؓ(f)该控件中l常需要用到FindControlsҎ(gu)Q自行加入元素会(x)影响到该Ҏ(gu)?br /> (tng) (tng) (tng) (tng) (tng) (tng)可以看到模板q具有自己所对应的StyleQ这个样式与当前Item所使用的模块对应，例如选中W?，如果没有配置<SelectedItemStyle>才会(x)使用<ItemStyle>所定义的样式?br />
(tng) (tng) (tng)手工分页Q?/strong>
(tng) (tng) (tng) (tng) (tng) (tng)如上面提到的Repeater、DataList控g都没有提供分늚功能Q此时可以对数据源进行分再配合自定义的D条来实现分页效果?br /> (tng) (tng) (tng) (tng) (tng) (tng)手工分页Q需要用?System.Web.UI.WebControls.PagedDataSource 对象?br /> (tng) (tng) (tng) (tng) (tng) (tng)例如Q在面中加入lblPageNo控g以保存当前页?text="0")QbtnPrevious表示上一，btnNext表示下一c(din)?/p>新的代码 (tng) (tng) (tng) (tng)/**//// (tng)<summary>
(tng) (tng) (tng) (tng)/// (tng)数据l定
(tng) (tng) (tng) (tng)/// (tng)</summary> (tng) (tng) (tng) (tng)private (tng)void (tng)myDataBind() (tng)
{ (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)SqlConnection (tng)con (tng)= (tng)Db.getConnection(); (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)SqlDataAdapter (tng)sda (tng)= (tng)new (tng)SqlDataAdapter(); (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)sda.SelectCommand (tng)= (tng)new (tng)SqlCommand("select (tng)* (tng)from (tng)vote",con); (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)DataTable (tng)table (tng)= (tng)new (tng)DataTable("vote"); (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)sda.Fill(table); (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)//使用?jin)分?/span> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)PagedDataSource (tng)pds (tng)= (tng)new (tng)PagedDataSource(); (tng) (tng) (tng) (tng)//使用一个PagedDataSource对象 (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)pds.DataSource (tng)= (tng)table.DefaultView; (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)pds.PageSize (tng)= (tng)3; (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)//每页3条记?/span> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)pds.AllowPaging (tng)= (tng)true; (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)//使用分页效果 (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)int (tng)pageNo (tng)= (tng)int.Parse(this.lblPageNo.Text); (tng) (tng) (tng) (tng)//取得保留的当前页?初始?"0" (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)pds.CurrentPageIndex (tng)= (tng)pageNo; (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)//讄当前?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)//开关上Q下导航按?/span> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)this.btnPrevious.Enabled (tng)= (tng)!(pageNo (tng)<= (tng)0); (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)this.btnNext.Enabled (tng)= (tng)!(pageNo (tng)>= (tng)pds.PageCount (tng)- (tng)1); (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)//DataList的数据源指向该PagedDataSource (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)this.DataList1.DataSource (tng)= (tng)pds; (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)this.DataList1.DataBind(); (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)this.DataList1.DataKeyField (tng)= (tng)"vID"; (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)//指定需要绑定的主键?/span> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)DataList1.DataBind(); (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)con.Close(); (tng) (tng) (tng) (tng)}
(tng) (tng) (tng) (tng)//上一?/span> (tng) (tng) (tng) (tng)protected (tng)void (tng)tbtnPrevious_Click(object (tng)sender, (tng)EventArgs (tng)e) (tng){ (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)this.lblPageNo.Text (tng)= (tng)Convert.ToString(int.Parse(this.lblPageNo.Text) (tng)- (tng)1); (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)myDataBind(); (tng) (tng) (tng) (tng)} (tng) (tng) (tng) (tng)//下一?/span> (tng) (tng) (tng) (tng)protected (tng)void (tng)btnNext_Click(object (tng)sender, (tng)EventArgs (tng)e) (tng){ (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)this.lblPageNo.Text (tng)= (tng)Convert.ToString(int.Parse(this.lblPageNo.Text) (tng)+ (tng)1); (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)myDataBind(); (tng) (tng) (tng) (tng)}
(tng) (tng) (tng) (tng) (tng) (tng)利用数据视图DataView的Sort属性来实现排序Q将其属性指定ؓ(f)一个字D名 + 排序规则?br /> (tng) (tng) (tng) (tng) (tng) (tng)在GridView中列上可以设|SortExpression排序表达式，q在Sorting事g中指定DataView的Sort事g的SortExpression卛_?br />
(tng) (tng) (tng)GridViewQ?br /> (tng) (tng) (tng) (tng) (tng) (tng)是一个数据表|在以前的版本中叫DataGrid。它的功能比DataList更ؓ(f)强大Q支持数据表格显C、按列的控制(DataList按名字就只支持一?、列的排序、分c(din)空|制等多种功能Q可以将DataList看做是一个轻量的控Ӟ不过从这两种控g的属性及(qing)使用方式来看Q风格完全不同，q可能也是两控g命名不一的原因吧?br />
(tng)
]]>
(tng) (tng) (tng)ASP.NET提供的WEB控g分类
(tng) (tng) (tng) (tng) (tng) (tng)内部控gQ基于HTML控gQ具?runas=server 的属性；
(tng) (tng) (tng) (tng) (tng) (tng)列表控gQ用于在WEB中创徏数据列表Q常用的?Repeater, DataList, DataGrid
(tng) (tng) (tng) (tng) (tng) (tng)复杂控gQ用单控件聚合而成Q如日历
(tng) (tng) (tng) (tng) (tng) (tng)验证控gQ对输入数据q行准确性和范围的检?验证工作?Server 端进?
(tng) (tng) (tng)文本输入
(tng) (tng) (tng) (tng) (tng) (tng)textbox
(tng) (tng) (tng) (tng) (tng) (tng)通过讄该控件的 TextMode 属性可以实?1.单行文本 2.多行文本 3.密码文本 三种VIEWQ多行文本模式时属?cols,rows生效?br />
(tng) (tng) (tng)
控制转移
(tng) (tng) (tng) (tng) (tng) (tng)1.Button
(tng) (tng) (tng) (tng) (tng) (tng)2.LinkButton
(tng) (tng) (tng) (tng) (tng) (tng)3.ImageButton
(tng) (tng) (tng) (tng) (tng) (tng)4.
HyperLink
(tng) (tng) (tng) (tng) (tng) (tng)1 - 3 都属?button Q可以响应事Ӟ?HyperLink 则不行。HyperLink ?HTML 中的锚一P点击它ƈ不会(x)产生向服务器的提交，而将在客L(fng)完成跌{Q与锚标记相比的好处在于Q它属于服务器控Ӟ因此可以在类中?this 指针加以引用Q方便编E?br /> (tng) (tng) (tng) (tng) (tng) (tng)Button 有个 commandName 属性，在演CZ让它充当?TAG 的角Ԍ用于一个事件响应多?Button 控g时对对象的区别：(x)
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)if( ((System.Web.UI.WebControls.Button)sender).CommandName == "b1" )
(tng) (tng) (tng) (tng) (tng) (tng)LinkButtonQ样子与 HyperLink差不多，但是有着明显的区别，它是可以响应事g??x)生对服务器的提?Q?br /> (tng) (tng) (tng) (tng) (tng) (tng)I(yng)mageButtonQ具有一个ImageURL属性可以加载图片，AlternateText属性指定图片无法找到时昄的文字，另外它的事g响应形参cd也有着不同Q是 ImageClickEventArgs cdQ该cdh?x,y属性可以事g对于点击到图片上的具体区域做出反应?/font>
(tng) (tng) (tng)选择
(tng) (tng) (tng) (tng) (tng) (tng)1.CheckBox
(tng) (tng) (tng) (tng) (tng) (tng)2.RadioButton
(tng) (tng) (tng) (tng) (tng) (tng)3.ListBox
(tng) (tng) (tng) (tng) (tng) (tng)4.
DropDownList
(tng) (tng) (tng) (tng) (tng) (tng)CheckBoxQ复选框Q属?Checked 表示该复选框是否被选中Q另外还提供一?CheckBoxList 作ؓ(f)一个集合控件方便操作；
(tng) (tng) (tng) (tng) (tng) (tng)RadioButtonQ单选框Q属?Checked 表示该单选框是否被选中Q通过讑֮多个 RadioButton 属?GroupName 为相同|可以很方便的多个控件组合成一个GroupQ另外还提供一个集合控?RadioButtonList
(tng) (tng) (tng) (tng) (tng) (tng)有很多控仉h一?AutoPostBack 属性，该属性表C是否响应服务器事gQ如果ؓ(f)false则不?x)响应事Ӟ而ؓ(f)true时一旦触发事件就?x)向服务器提交，因此需要避免控件经常性的向服务端提交?br />
(tng) (tng) (tng)容器
(tng) (tng) (tng) (tng) (tng) (tng)PanelQ面ѝ通常用于在同一中实现切换(轮流昄)?br />
(tng) (tng) (tng)复杂控g
(tng) (tng) (tng) (tng) (tng) (tng)1.ADRotatorQ广告控件。AdvertisementFile 属性可以ؓ(f)控g指定一个XML配置文gQKeywordFilter 属性能够根据配|文件中各广告的 key q行{选?br /> (tng) (tng) (tng) (tng) (tng) (tng)该广告控?strong>一ơ只能显CZ?/strong>囄Q只有当h面或重q时?x)选取其它的图片，相同于ASP中用的那个随机图?br /> (tng) (tng) (tng) (tng) (tng) (tng)配置文gQ一?lt;AD>标签代表一个广告?/font>
XML配置文g
< Advertisements >
(tng) (tng) (tng) (tng) < Ad >
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) < ImageUrl > 囑փ文g的位|?/span> </ ImageUrl >
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) < NavigateUrl > 单击q告后蟩到的URL </ NavigateUrl >
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) < AlternateText > 鼠标在图像上昄的文?/span> </ AlternateText >
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) < Keyword > 指定cd </ Keyword >
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) < Impressions > q告出现的优先,大优?/span> </ Impressions >
(tng) (tng) (tng) (tng) </ Ad >
</ Advertisements >
(tng) (tng) (tng) (tng) (tng) (tng)2.CalendarQ日历控件?br />
(tng) (tng) (tng)上传控g
(tng) (tng) (tng) (tng) (tng) (tng)FileUploadQ文件上传。PostedFile 属性表C已l上传的文g对象Q可以通过该对象的属性及(qing)Ҏ(gu)获取上传文g的各U属性。FileName 属性表CZ传文件的文g?PostedFile对象也具有一个FileName属性，但是表示的是上传文g的全路径名，需要手工提取文件名)。PostedFile.SaveAs(path) Ҏ(gu)可以上传的文g保存在服务端的指定\径下Q注意这里的 path 必须是一个绝对地址Q因此用时需要进行相对\?->l对路径的{换，可以使用 Server.MapPath(path) Ҏ(gu)?br />
(tng) (tng) (tng)验证控g
(tng) (tng) (tng) (tng) (tng) (tng)1.RequiredFieldValidatorQ空值验证；
(tng) (tng) (tng) (tng) (tng) (tng)2.CompareValidatorQ比较验证。该控g有三U工作方?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng).值比较，ValueToCompare (tng)属性用于设定特征|Type 指定特征值的cdQOperator 属性指定比较运符 (Value Operator Control.value)Q?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng).cd(g)验，Type 指定cdQOperator 属性?"DataTypeCheck"Q?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng).控g比较QTypeQOperatorQControlToValidateQControlToCompare属性即可?br /> (tng) (tng) (tng) (tng) (tng) (tng)3.RangeValidatorQ值域验证Q?br /> (tng) (tng) (tng) (tng) (tng) (tng)4.RegularExpressionValidatorQ正则表辑ּ验证Q?br /> (tng) (tng) (tng) (tng) (tng) (tng)5.CustomValidatorQ自定义验证。它支持客户端及(qing)服务端自定义验证QServer 端验证时该控件提供一个ServerValidate事gQ该事g的ServerValidateEventArgs对象cd参数?Value 属性表C控gl定的被验证控g?ValueQIsValid 属性表C是否通过验证Q只需在事件中Ҏ(gu)自定义的规则讄 IsValid属性即可；
(tng) (tng) (tng) (tng) (tng) (tng)6.ValidationSummaryQ列N面中的全部验证错误信息。用于将错误信息集中昄?br /> (tng) (tng) (tng) (tng) (tng) (tng)在页面中使用验证控gӞ除了(jin)W?U，2-4都不?x)对ID行验证，因此需要根据情冉|配用?br /> (tng) (tng) (tng) (tng) (tng) (tng)~省情况下，有些验证需要在 server 端进?如CustomValidator)Q流E会(x)成ؓ(f) 先提交后验证Q这时在~程时就需要用?Page.IsValid 属性，只有当该属性ؓ(f)true时才表示通过?jin)全部的验证?br /> (tng) (tng) (tng) (tng) (tng) (tng)对于IE的低版本来说Q客L(fng)验证?x)出现问题，此时可以指定全部使用服务端验?lt;%@ page ClientTarget="DownLevel" %>
(tng) (tng) (tng) (tng) (tng) (tng)在页面中常常包含大量的验证控Ӟ在用时常常需要根据需要一l验证生效。此旉证控件的 ValidationGroup 属性就可以z上用场Q该属性可以对验证控gq行分组Q同时在使用时在能够引v提交的控件上指定ValidationGroup属?该属性同样会(x)影响到Page.IsValid的结?。当然如果在面上用了(jin)ValidationSummary控g的话Q也需要指定该属性，不然它不?x)显C对应组控g的错误提CZ息?br />
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(tng) (tng) (tng)ASP.NET与ASP的区?/strong>
(tng) (tng) (tng) (tng) (tng) (tng)asp.net q行?.net 框架之上Q经q了(jin)伪编译，?asp 则是直接q行在IIS上的Q在调用时由DLLq行解释Q?br /> (tng) (tng) (tng) (tng) (tng) (tng)asp.net 支持三种开发语aQvb.net,c#,j#Q?asp 仅支?vbscript 的语法；
(tng) (tng) (tng) (tng) (tng) (tng)asp.net 提供?jin)控件支持，?asp 则没有；
(tng) (tng) (tng) (tng) (tng) (tng)asp.net 支持OOPQ代码也是按cLl织的，asp 只能依靠_y的代码实玎ͼ
(tng) (tng) (tng) (tng) (tng) (tng)asp.net 在页面的处理上采用了(jin)VB的事仉动，大大化了(jin)开发难度，asp 依靠的是手工驱动Q?br /> (tng) (tng) (tng) (tng) (tng) (tng)asp.net 提供的VIEWSTATE机制Q得页面元素可以保持原有的|asp 必须依靠手工代码Q?br /> (tng) (tng) (tng) (tng) (tng) (tng)asp.net 使用?jin)代码分，asp 则没有，现在老板p看清楚你写的那堆垃圾在哪儿了(jin)Q?br /> (tng) (tng) (tng) (tng) (tng) (tng)asp.net 的IDE功能上强大许多，不过在HTML元素的设计上成了(jin)一只鸡肋，许多地方是习(fn)惯手工改写；
(tng) (tng) (tng)ASP.NET提供的控?/strong>
(tng) (tng) (tng) (tng) (tng) (tng)提供的常用控仉在VS工具q"标准"?HTML"栏中Q所谓标准控件就是指服务器控Ӟ一拖出来就有个 runas="server" 的属性，当然HTML控g也可以加上这个属性变wؓ(f)服务器控Ӟ一旦拥有这个runas那么该控件就?x)成为类的一属性，在类成员?sh)用this指针可以直接引用，果然是方便快捗不q界面元素的动作也相应着发生?jin)变化，如果是普通的HTML元素Q那么响应它事g的只能是本地 script 代码Q而一旦成为服务器控gQ那么所有针对它的事件响应都?x)在服务器端完成?br />
(tng) (tng) (tng)常用的事Ӟ(x)
}
}
(tng) (tng) (tng)ASP.NET从提交的数据中取?/strong>
2 (tng) string (tng)userName (tng)= (tng)Request.Form.Get("userName");
3 (tng) string (tng)userName (tng)= (tng)Request.QueryString["userName"];
(tng) (tng) (tng) (tng) (tng) (tng)取值的Ҏ(gu)?asp 相同?br /> (tng) (tng) (tng) (tng) (tng) (tng)W?行方法适用?Post/Get 两种提交方式Q第2行只能用?Post 提交Q这里用了(jin)集合的GetҎ(gu)Q第3行只能用?Get 提交Q这里用另外一U获取集合成员的Ҏ(gu)?br />
(tng) (tng) (tng)ASP.NET查询MsSQL数据?/strong>
(tng) (tng) (tng) (tng) (tng) (tng)需要引用的命名I间(相当于JAVA中的?:System.Data.SqlClient;
(tng) (tng) (tng) (tng) (tng) (tng)步骤:
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)1.新徏一?SqlConnection q接对象Qƈ打开Q?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)new SqlConnection("server=服务的地址;database=数据库名;uid=sa;pwd=")Q?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)con.Open();
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)2.新徏一?SqlCommand 命o(h)对象Q?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)new SqlCommand(SQL语句,con);
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)3.通过调用 SqlCommand 对象的方法获得数据?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)例如Q?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)SqlDataReader sdr = cmd.ExecuteReader(); (tng) (tng) (tng)//获得一个只向前的游?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)while(sdr.Read()) {
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)...
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)}
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)4.释放资源
(tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)使用 using 语句Q属?.net 的专有语法了(jin)Q在块的l束由 using 语法调用 IDisposable (tng)接口定义?Dispose()Ҏ(gu)。因此包含在 using 语句内的对象都应该实?IDisposable 接口?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)使用 (tng)finally (tng)Q这个方法还是比较容易接受一些，try/catch/finallyl合除了(jin)可以释放资源外还可以捕获异常?br /> (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng) (tng)查了(jin)一下资料，MS连接池也傻瓜了(jin)一?只有使用System.Data.SqlClient包时)Q除非在 SqlConnection 对象的连接字串中昑ּ指定Q否则自动配|连接池。因此在 SqlConnection 对象的用上应该做到随手关闭的好?fn)惯Q呵?/p>
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