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
}
}