• ASP.NET入门实用语句


    1.//弹出对话框.点击转向指定页面
    Response.Write(&quot; <script>window.alert('该会员没有提交申请,请重新提交!')
    </script>&quot;);
    Response.Write(&quot; <script>window.location
    ='http://www.51aspx.com/bizpulic/upmeb.aspx' </script>&quot;);
    2.//弹出对话框
    Response.Write(&quot; <script language='javascript'>alert('产品添加成功!')
    </script >&quot;);
    3.//删除文件
    string filename =&quot;20059595157517.jpg&quot;;
    pub.util.DeleteFile(HttpContext.Current.Server.MapPath(&quot;../file/&quot;)
    +filename);
    4.//绑定下拉列表框datalist
    System.Data.DataView dv=conn.Exec_ex(&quot;select -1 as code,'请选择经营模式'
    as content from dealin union select code,content from dealin&quot;);
    this.dealincode.DataSource=dv;
    this.dealincode.DataTextField=&quot;content&quot;;
    this.dealincode.DataValueField=&quot;code&quot;;   
    this.dealincode.DataBind();
    this.dealincode.Items.FindByValue(dv[0][&quot;dealincode&quot;].ToString
    ()).Selected=true;
    5.//时间去秒显示
    <%# System.DateTime.Parse(DataBinder.Eval
    (Container.DataItem,&quot;begtime&quot;).ToString()).ToShortDateString()%>
    6.//标题带链接
    <%# &quot; <a class=\&quot;12c\&quot; target=\&quot;_blank\&quot;
    href=\&quot;http://www.51aspx/CV/_&quot;+DataBinder.Eval
    (Container.DataItem,&quot;procode&quot;)+&quot;.html\&quot;>&quot;+
    DataBinder.Eval(Container.DataItem,&quot;proname&quot;)+&quot; </a>&quot;%>
    7.//修改转向
    <%# &quot; <A href=\&quot;editpushpro.aspx?id=&quot;+DataBinder.Eval
    (Container.DataItem,&quot;code&quot;)+&quot;\&quot;>&quot;+&quot;修改
    &quot;+&quot; </A>&quot;%>
    8.//弹出确定按钮
    <%# &quot; <A id=\&quot;btnDelete\&quot; onclick=\&quot;return confirm('你是否
    确定删除这条记录吗?');\&quot; href=\&quot;pushproduct.aspx?
    dl=&quot;+DataBinder.Eval(Container.DataItem,&quot;code&quot;)
    +&quot;\&quot;>&quot;+&quot;删除&quot;+&quot; </A>&quot;%>
    9.//输出数据格式化 "{0:F2}" 是格式 F2表示小数点后剩两位
    <%# DataBinder.Eval(Container, &quot;DataItem.PriceMoney&quot;,&quot;{0:F2}
    &quot;) %>
    10.//提取动态网页内容
    Uri uri = new Uri(&quot;http://www.51aspx.com/&quot;);
      WebRequest req = WebRequest.Create(uri);
      WebResponse resp = req.GetResponse();
      Stream str = resp.GetResponseStream();
      StreamReader sr = new StreamReader(str,System.Text.Encoding.Default);
      string t = sr.ReadToEnd();
      this.Response.Write(t.ToString());
    11.//获取" . "后面的字符
    i.ToString().Trim().Substring(i.ToString().Trim().LastIndexOf(&quot;.&quot;)
    +1).ToLower().Trim()
    12. 打开新的窗口并传送参数:
    传送参数:
    response.write(&quot;<script>window.open(’*.aspx?
    id=&quot;+this.DropDownList1.SelectIndex+&quot;&amp;id1=&quot;+...+&quot;’)<
    /script>&quot;)
    接收参数:
    string a = Request.QueryString(&quot;id&quot;);
    string b = Request.QueryString(&quot;id1&quot;);
    12.为按钮添加对话框
    Button1.Attributes.Add(&quot;onclick&quot;,&quot;return confirm(’确认?’)
    &quot;);
    button.attributes.add(&quot;onclick&quot;,&quot;if(confirm(’are you sure...?
    ’)){return true;}else{return false;}&quot;)
    13.删除表格选定记录
    int intEmpID = (int)MyDataGrid.DataKeys[e.Item.ItemIndex];
    string deleteCmd = &quot;Delete from Employee where emp_id = &quot; +
    intEmpID.ToString()
    14.删除表格记录警告
    private void DataGrid_ItemCreated(Object sender,DataGridItemEventArgs e)
    {
    switch(e.Item.ItemType)
    {
    case ListItemType.Item :
    case ListItemType.AlternatingItem :
    case ListItemType.EditItem:
    TableCell myTableCell;
    myTableCell = e.Item.Cells[14];
    LinkButton myDeleteButton ;
    myDeleteButton = (LinkButton)myTableCell.Controls[0];
    myDeleteButton.Attributes.Add(&quot;onclick&quot;,&quot;return confirm(’
    您是否确定要删除这条信息’);&quot;);
    break;
    default:
    break;
    }
    }
    15.点击表格行链接另一页
    private void grdCustomer_ItemDataBound(object sender,
    System.Web.UI.WebControls.DataGridItemEventArgs e)
    {
    //点击表格打开
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType ==
    ListItemType.AlternatingItem)
    e.Item.Attributes.Add(&quot;onclick&quot;,&quot;window.open(’
    Default.aspx?id=&quot; + e.Item.Cells[0].Text + &quot;’);&quot;);
    }
    双击表格连接到另一页
    在itemDataBind事件中
    if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType ==
    ListItemType.AlternatingItem)
    {
    string orderItemID =e.item.cells[1].Text;
    e.item.Attributes.Add(&quot;ondblclick&quot;,
    &quot;location.href=’../ShippedGrid.aspx?id=&quot; + orderItemID + &quot;’
    &quot;);
    }
    双击表格打开新一页
    if(e.Item.ItemType == ListItemType.Item || e.Item.ItemType ==
    ListItemType.AlternatingItem)
    {
    string orderItemID =e.item.cells[1].Text;
    e.item.Attributes.Add(&quot;ondblclick&quot;, &quot;open
    (’../ShippedGrid.aspx?id=&quot; + orderItemID + &quot;’)&quot;);
    }
    16.表格超连接列传递参数
    <asp:HyperLinkColumn Target=&quot;_blank&quot; headertext=&quot;ID号&quot;
    DataTextField=&quot;id&quot; NavigateUrl=&quot;aaa.aspx?id=’
    <%# DataBinder.Eval(Container.DataItem, &quot;数据字段1&quot;)%>’ &amp;
    name=’<%# DataBinder.Eval(Container.DataItem, &quot;数据字段2&quot;)%>’ /

    17.表格点击改变颜色
    if (e.Item.ItemType == ListItemType.Item ||e.Item.ItemType ==
    ListItemType.AlternatingItem)
    {
    e.Item.Attributes.Add
    (&quot;onclick&quot;,&quot;this.style.backgroundColor=’#99cc00’;
    this.style.color=’buttontext’;this.style.cursor=’default’;&quot;);
    }
    写在DataGrid的_ItemDataBound里
    if (e.Item.ItemType == ListItemType.Item ||e.Item.ItemType ==
    ListItemType.AlternatingItem)
    {
    e.Item.Attributes.Add
    (&quot;onmouseover&quot;,&quot;this.style.backgroundColor=’#99cc00’;
    this.style.color=’buttontext’;this.style.cursor=’default’;&quot;);
    e.Item.Attributes.Add(&quot;onmouseout&quot;,&quot;this.style.backgroundColor=
    ’’;this.style.color=’’;&quot;);
    }
    18.关于日期格式
    日期格式设定
    DataFormatString="{0:yyyy-MM-dd}"
    我觉得应该在itembound事件中
    e.items.cell["你的列"].text=DateTime.Parse(e.items.cell["你的
    列"].text.ToString("yyyy-MM-dd"))
    19.获取错误信息并到指定页面
    不要使用Response.Redirect,而应该使用Server.Transfer
    e.g
    // in global.asax
    protected void Application_Error(Object sender, EventArgs e) {
    if (Server.GetLastError() is HttpUnhandledException)
    Server.Transfer(&quot;MyErrorPage.aspx&quot;);
    //其余的非HttpUnhandledException异常交给ASP.NET自己处理就okay了 :)
    }
    Redirect会导致post-back的产生从而丢失了错误信息,所以页面导向应该直接在服
    务器端执行,这样就可以在错误处理页面得到出错信息并进行相应的处理
    20.清空Cookie
    Cookie.Expires=[DateTime];
    Response.Cookies(&quot;UserName&quot;).Expires = 0

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  • 原文地址:https://www.cnblogs.com/chenqingwei/p/1579417.html
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