21.如何设定全局变量
Global.asax中Application_Start()事件中添加Application[属性名] = xxx;就是你的全局变量22.怎样作到HyperLinkColumn生成的连接后,点击连接,打开新窗口?
HyperLinkColumn有个属性Target,将器值设置成"_blank"即可.(Target="_blank")【ASPNETMENU】点击菜单项弹出新窗口在你的menuData.xml文件的菜单项中加入URLTarget="_blank",如:<?xml version="1.0" encoding="GB2312"?><MenuData ImagesBaseURL="images/"> <MenuGroup><MenuItem Label="内参信息" URL="Infomation.aspx" ><MenuGroup ID="BBC"><MenuItem Label="公告信息" URL="Infomation.aspx" URLTarget="_blank" LeftIcon="file.gif"/><MenuItem Label="编制信息简报" URL="NewInfo.aspx" LeftIcon="file.gif" />最好将你的aspnetmenu升级到1.2版23.读取DataGrid控件TextBox值
foreach(DataGrid dgi in yourDataGrid.Items){TextBox tb = (TextBox)dgi.FindControl("yourTextBoxId");tb.Text.}24.在DataGrid中有3个模板列包含Textbox分别为 DG_ShuLiang (数量) DG_DanJian(单价) DG_JinE(金额)分别在5.6.7列,要求在录入数量及单价的时候自动算出金额即:数量*单价=金额还要求录入时限制为 数值型.我如何用客户端脚本实现这个功能?
<asp:TemplateColumn HeaderText="数量"> <ItemTemplate><asp:TextBox id="ShuLiang" runat=’server’ Text=’<%# DataBinder.Eval(Container.DataItem,"DG_ShuLiang")%>’ onkeyup="javascript:DoCal()"/><asp:RegularExpressionValidator id="revS" runat="server" ControlToValidate="ShuLiang" ErrorMessage="must be integer" ValidationExpression="^\d+$" /></ItemTemplate></asp:TemplateColumn><asp:TemplateColumn HeaderText="单价"> <ItemTemplate><asp:TextBox id="DanJian" runat=’server’ Text=’<%# DataBinder.Eval(Container.DataItem,"DG_DanJian")%>’ onkeyup="javascript:DoCal()"/><asp:RegularExpressionValidator id="revS2" runat="server" ControlToValidate="DanJian" ErrorMessage="must be numeric" ValidationExpression="^\d+(\.\d*)?$" /></ItemTemplate></asp:TemplateColumn><asp:TemplateColumn HeaderText="金额"> <ItemTemplate><asp:TextBox id="JinE" runat=’server’ Text=’<%# DataBinder.Eval(Container.DataItem,"DG_JinE")%>’ /></ItemTemplate></asp:TemplateColumn><script language="javascript">function DoCal(){var e = event.srcElement;var row = e.parentNode.parentNode;var txts = row.all.tags("INPUT");if (!txts.length || txts.length < 3)return;var q = txts[txts.length-3].value;var p = txts[txts.length-2].value;if (isNaN(q) || isNaN(p))return;q = parseInt(q);p = parseFloat(p);txts[txts.length-1].value = (q * p).toFixed(2);}</script>25.datagrid选定比较底下的行时,为什么总是刷新一下,然后就滚动到了最上面,刚才选定的行因屏幕的关系就看不到了。
page_load
page.smartNavigation=true
26.在Datagrid中修改数据,当点击编辑键时,数据出现在文本框中,怎么控制文本框的大小 ?
private void DataGrid1_ItemDataBound(obj sender,DataGridItemEventArgs e){for(int i=0;i<e.Item.Cells.Count-1;i++)if(e.Item.ItemType==ListItemType.EditType){e.Item.Cells[i].Attributes.Add("Width", "80px")} }27.对话框
private static string ScriptBegin = "<script language=\"JavaScript\">";private static string ScriptEnd = "</script>";public static void ConfirmMessageBox(string PageTarget,string Content){string ConfirmContent="var retValue=window.confirm(’"+Content+"’);"+"if(retValue){window.location=’"+PageTarget+"’;}";ConfirmContent=ScriptBegin + ConfirmContent + ScriptEnd;Page ParameterPage = (Page)System.Web.HttpContext.Current.Handler;ParameterPage.RegisterStartupScript("confirm",ConfirmContent);//Response.Write(strScript);}28.将时间格式化:string aa=DateTime.Now.ToString("yyyy年MM月dd日");
1.1 取当前年月日时分秒 currentTime=System.DateTime.Now;1.2 取当前年 int 年= DateTime.Now.Year;1.3 取当前月 int 月= DateTime.Now.Month; 1.4 取当前日 int 日= DateTime.Now.Day; 1.5 取当前时 int 时= DateTime.Now.Hour; 1.6 取当前分 int 分= DateTime.Now.Minute; 1.7 取当前秒 int 秒= DateTime.Now.Second; 1.8 取当前毫秒int 毫秒= DateTime.Now.Millisecond;
29.自定义分页代码
//先定义变量 :public static int pageCount; //总页面数 public static int curPageIndex=1; //当前页面 //下一页: if(DataGrid1.CurrentPageIndex < (DataGrid1.PageCount - 1)) { DataGrid1.CurrentPageIndex += 1; curPageIndex+=1; } bind(); // DataGrid1数据绑定函数 //上一页: if(DataGrid1.CurrentPageIndex >0) { DataGrid1.CurrentPageIndex += 1; curPageIndex-=1; } bind(); // DataGrid1数据绑定函数 //直接页面跳转: int a=int.Parse(JumpPage.Value.Trim());//JumpPage.Value.Trim()为跳转值 if(a<DataGrid1.PageCount) { this.DataGrid1.CurrentPageIndex=a; } bind();30.DataGrid使用
//添加删除确认: private void DataGrid1_ItemCreated(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e) { foreach(DataGridItem di in this.DataGrid1.Items) { if(di.ItemType==ListItemType.Item||di.ItemType==ListItemType.AlternatingItem) { ((LinkButton)di.Cells[8].Controls[0]).Attributes.Add("onclick","return confirm(’确认删除此项吗?’);"); } } } //样式交替: ListItemType itemType = e.Item.ItemType; if (itemType == ListItemType.Item ) { e.Item.Attributes["onmouseout"] = "javascript:this.style.backgroundColor=’#FFFFFF’;"; e.Item.Attributes["onmouseover"] = "javascript:this.style.backgroundColor=’#d9ece1’;cursor=’hand’;" ; } else if( itemType == ListItemType.AlternatingItem) { e.Item.Attributes["onmouseout"] = "javascript:this.style.backgroundColor=’#a0d7c4’;"; e.Item.Attributes["onmouseover"] = "javascript:this.style.backgroundColor=’#d9ece1’;cursor=’hand’;" ; } //添加一个编号列: DataTable dt= c.ExecuteRtnTableForAccess(sqltxt); //执行sql返回的DataTable DataColumn dc=dt.Columns.Add("number",System.Type.GetType("System.String")); for(int i=0;i<dt.Rows.Count;i++) { dt.Rows[i]["number"]=(i+1).ToString(); } DataGrid1.DataSource=dt; DataGrid1.DataBind(); //DataGrid1中添加一个CheckBox,页面中添加一个全选框 private void CheckBox2_CheckedChanged(object sender, System.EventArgs e) { foreach(DataGridItem thisitem in DataGrid1.Items) { ((CheckBox)thisitem.Cells[0].Controls[1]).Checked=CheckBox2.Checked; } } //将当前页面中DataGrid1显示的数据全部删除 foreach(DataGridItem thisitem in DataGrid1.Items) { if(((CheckBox)thisitem.Cells[0].Controls[1]).Checked) { string strloginid= DataGrid1.DataKeys[thisitem.ItemIndex].ToString(); Del (strloginid); //删除函数 } }