子菜单点击事件问题 [英] sub menu click event problem
本文介绍了子菜单点击事件问题的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
大家好，
我在点击第一个菜单项时使用2菜单控件我需要获取子菜单控件，默认重定向到第一项子菜单控件。
当点击菜单项时我得到子菜单项但是当点击子菜单项时总控件正在刷新和什么我选择了清除因此子菜单消失了。
点击子菜单项时如何维护主菜单和子菜单。
thankyou
这是代码我正在使用请帮助我....
DataRowCollection drcMAINMENU;
MenuItem mainMENUITEM;
private PublicMenu objPM = new PublicMenu（）;
string span =< span class = mainmenu style = font-weight：bold; text-transform：uppercase; font-size：12px; display：none;>;
protected void Page_Load（object sender，EventArgs e）
{
if（！IsPostBack）
{
if（Request [parentid]！ = null）
{
ViewState [Ilocal] = Convert.ToString（Request [parentid]）;
}
if（Request [menuid]！= null）
{
ViewState [link] = Convert.ToString（Request [menuid]）;
}
// ctrlMENU.Items [0] .Selected = true;
}
}
public void mainMenu（）
{
int ilocal = 0;
DataSet dsMenu = objPM.GetMainMenuDetails（）;
drcMAINMENU = dsMenu.Tables [0] .Rows;
mainMENUITEM = new MenuItem（Span +< span class = Select> Home< / span>< / span>）;
mainMENUITEM.NavigateUrl = ConfigurationSettings.AppSettings [InternalUrl]。ToString（）+Default.aspx;
ctrlMENU.Items.Add（mainMENUITEM）;
ctrlMENU.ForeColor = System.Drawing.Color.White;
foreach（drcMAINMENU中的DataRow drMAINMENU）
{
string strSubMenu = string.Empty;
string submenuItem = drMAINMENU [MenuId]。ToString（）;
mainMENUITEM = new MenuItem（< span class = mainmenu style = font-weight：bold; text-transform：uppercase; font-size：12px; display：none;>+ drMAINMENU [Title] .ToString（）+< / span>）;
ctrlMENU.Items.Add（mainMENUITEM）;
string t_Url =（drMAINMENU [IsExternalLink]。ToString（）==N&& drMAINMENU [IsContent]。ToString（）==Y）？ Content.aspx？menuid =+ submenuItem：drMAINMENU [ExternalLink]。ToString（）;
if（drMAINMENU [IsExternalLink]。ToString（）==N&& drMAINMENU [IsContent]。ToString（）==Y&& drMAINMENU [IsLastLevel] .ToString（）==Y）
{
mainMENUITEM.NavigateUrl = ConfigurationSettings.AppSettings [InternalUrl]。ToString（）+ t_Url;
}
else if（drMAINMENU [IsExternalLink]。ToString（）==Y&& drMAINMENU [IsContent]。ToString（）==N&& drMAINMENU [IsLastLevel]。ToString（）==Y）
{
mainMENUITEM.NavigateUrl = ConfigurationSettings.AppSettings [InternalUrl]。ToString（）+ t_Url;
}
ilocal = ilocal + 1;
HtmlAnchor a =（HtmlAnchor）this.FindControl（ctl00_Public_MenuControl1_ctrlMENU_1）;
// a.Attributes.CssStyle =select;
}
if（Session [SubMenuItems]！= null）
{
DataSet ds =（DataSet）（Session [SubMenuItems]）;
if（ds.Tables [0] .Rows.Count> 0）
{
string Flag =ID;
GetSubmenuItems（ds.Tables [0] .Rows [0] [MenuId]。ToString（），Flag）;
}
}
}
public void ctrlMENU_MenuItemClick（object sender，MenuEventArgs e）
{
string text = e.Item.Text ;
text = text.Remove（0，Span.Length）;
text = text.Replace（< / span>，）;
GetSubmenuItems（text，NAME）;
}
private void GetSubmenuItems（string MainMenuItem，string Flag）
{
MenuItem childMENUITEM;
ctrlsubmenu.Items.Clear（）;
int ilocal = 0;
string tUrl;
string submenu_landingpageurl =，submenuurl =;
DataSet dsSUBMENU = objPM.GetSubMenuDetails（MainMenuItem，Flag）;
// Session [SubMenuItems] = dsSUBMENU;
DataRowCollection drcSUBMENU = dsSUBMENU.Tables [0] .Rows;
int blankspacecount = 0;
string blankspaces;
foreach（drcSUBMENU中的DataRow drSUBMENUITEM）
{
blankspaces =;
ilocal = Convert.ToInt32（drSUBMENUITEM [parentid]。ToString（））;
tUrl = drSUBMENUITEM [IsExternalLink]。ToString（）==Y？ drSUBMENUITEM [ExternalLink]。ToString（）：Content.aspx;
ViewState [Url] = tUrl;
tUrl = tUrl +？parentid =+ Server.UrlEncode（ilocal.ToString（））+& menuid =+ Server.UrlEncode（smenu+ drSUBMENUITEM [Title]。ToString（） ）.Replace（，％20）+& mid =+ Server.UrlEncode（drSUBMENUITEM [MenuId]。ToString（））;
if（drSUBMENUITEM！= null）
{
submenu.Visible = true;
string submenustring =< div class = \subNav \>;
submenustring + =< table>< tr>< td onclick = \返回funRedirect（'+ ConfigurationSettings.AppSettings [InternalUrl]。ToString（）+ tUrl +'）; \\ \\>< a style = font-weight：bold; text-transform：uppercase; text-decoration：none;> + drSUBMENUITEM [Title]。ToString（）+< / a>< / td>< / tr>< / table>;
submenustring + =< / div>;
childMENUITEM = new MenuItem（submenustring）;
ctrlsubmenu.Items.Add（childMENUITEM）;
}
其他
{
submenu.Visible = false;
}
}
DataRow drSUBMENUITEM1 = dsSUBMENU.Tables [0] .Rows [0];
for（int i = 0; i< = 0; i ++）
{
blankspaces =;
ilocal = Convert.ToInt32（drSUBMENUITEM1 [parentid]。ToString（））;
tUrl = drSUBMENUITEM1 [IsExternalLink]。ToString（）==Y？ drSUBMENUITEM1 [ExternalLink]。ToString（）：Content.aspx;
ViewState [Url] = tUrl;
tUrl = tUrl +？parentid =+ Server.UrlEncode（ilocal.ToString（））+& menuid =+ Server.UrlEncode（smenu+ drSUBMENUITEM1 [Title]。ToString（） ）.Replace（，％20）+& mid =+ Server.UrlEncode（drSUBMENUITEM1 [MenuId]。ToString（））;
if（drSUBMENUITEM1！= null）
{
ctrlsubmenu.Items [0] .Selected = true;
string s = ConfigurationSettings.AppSettings [InternalUrl]。ToString（）+ tUrl;
string test =< script> window.location =+ s +< / script>;
Page.ClientScript.RegisterStartupScript（GetType（），reditrct，funRedirect（+ s +），true）;
// Page.RegisterClientScriptBlock（redirect，test）;
}
其他
{
submenu.Visible = false;
}
}
解决方案
你似乎在描述的是：
< TABLE 样式 = WIDTH：900px align = center >
< ; TBODY align： center >
< span class =code-keyword>< TR align = center >
< TD align = center >
< DIV class = gwhomeMenu >
< DIV class = horz_menu >
< A id = gwhomeMenu_home href = WelcometoGoodwoods.htm > 主页< / A >
< A id = gwhomeMenu_aboutus href = AboutGoodWoods.htm > 关于我们< / A >
< A id = gwhomeMenu_products href = ProductsGoodWoods.htm > 产品< / A >
< A id = gwhomeMenu_services href = ServicesGoodWoods.htm > 服务< / A >
< A id = gwhomeMenu_contactus href = ContactGoodWoods.htm > 联络我们< / A >
< span class =code-keyword>< BR >
< / DIV >
< / DIV >
< / TD >
< / TR >
< TR >
< TD height = 50 > < / TD >
< ; < span class =code-leadattribute> / TR >
< ; / TBODY >
< / TABLE >
哪个显示菜单栏，文字改变颜色，更改按钮的背景图片，所有onMouseOver。
这些函数来自我编写的.js文件，它基于另一个示例。以下功能与上面的代码一起使用，以显示菜单栏。正确编码，它将显示与水平条按钮相关的垂直子菜单，每个垂直子菜单按钮能够生成子水平按钮等。
{
var win = window 。 open（）;
for （var i in x） win 。 document .write （i +' = '+ x [i] +'< br>'）;
}
var vhmen_timeout = 50;
function vhmen_show_aux（parent，child）
{
var p = document 。 getElementById （父）;
var c = < span class =code-leadattribute> document .getElementById（child）;
p 。 className = 活跃;
如果 （c 。 offsetWidth < = 0）
{
c 。 < span class =code-leadattribute> style 。 position = absolute;
c 。 style 。 visibility = 可见;
c 。 style 。 display = block;
}
var direction = undefined;
if （p 。 parentNode && p .parentNode [vhmen_position] ==x）
direction = p .parentNode [vhmen_direction];
var top = （c [vhmen_position] ==y）？ p 。 offsetHeight ： 0;
var left1 = （ c [vhmen_position] ==x）？ p 。 offsetWidth ： 0;
var left2 = （ c [vhmen_position] ==x）？ - c 。 offsetWidth ： 0;
var left3 = （ c [vhmen_position] ==x）？ p 。 offsetWidth ： 0;
for （; p; p = p .offsetParent）
{
if （ p 。 style 。 position ！='绝对'）
{
left1 + = p offsetLeft;
left2 + = p .offsetLeft;
top + = p .offsetTop;
}
left3 + = p .offsetLeft;
}
if （direction）
{
left =（direction =='right'）？ left1 ： left2;
c ['vhmen_direction'] =方向;
}
其他
{
left =（ left3 + c 。 offsetWidth < < span class =code-leadattribute> document 。 body .offsetWidth）？ left1 ： left2;
c ['vhmen_direction'] = （left3 + c。 offsetWidth < document 。 body .offsetWidth）？'right'：'left';
}
c 。 style 。 align = center;
c 。 style 。 position = 绝对;
c 。 style 。 visibility = 可见;
c 。 style 。 display = block;
c 。 style 。 top = top +'px';
c 。 style 。 left = left + 'px';
}
function vhmen_hide_aux（parent，child）
{
document 。 getElementById（parent）。 className = parent;
document .getElementById（child ）。 style 。可见性 = 隐藏;
document .getElementById（child ）。 style 。 display = block;
}
function vhmen_show（e）
{
var p = document 。 getElementById（this [vhmen_parent]）;
var c = < span class =code-leadattribute> document .getElementById（this [vhmen_child]）;
vhmen_show_aux（p。 id ， c .id）;
clearTimeout（c [vhmen_timeout]）;
}
function vhmen_hide（）
{
var c = document 。 getElementById（this [vhmen_child]）;
c [vhmen_timeout] = setTimeout（vhmen_hide_aux（'+ this this [vhmen_parent] +'，'+ this [vhmen_child] +'），vhmen_timeout）;
}
function vhmen_attach（parent， child ，position）
{
p = document 。 getElementById（parent）;
c = document 。 getElementById（child）;
p [vhmen_child] = c .id;
c [vhmen_child] = c .id;
p [vhmen_parent] = p .id;
c [vhmen_parent] = p .id;
c [vhmen_position] = 位置;
p 。 onmouseover = vhmen_show;
p 。 onmouseout = vhmen_hide;
c 。 onmouseover = vhmen_show;
c 。 onmouseout = vhmen_hide;
}
function gwwebmenu_build_aux（parent， child ，position）
{
document 。getElementById(parent). className = parent;
document .write（'< div class =vert_menuid ='+ parent +'_ child>'）;
var n = 0;
for （var i in child）
{
if （i ==' - '）
{
document 。 getElementById（parent）。 href = child [i];
继续;
}
if （typeof child [i] ==object）
{
document 。写（'< a class =parentid ='+ parent +'_'+ n +'>'+ i +'< / a > '）;
gwwebmenu_build_aux（parent +'_'+ n，child [i]，x）;
}
else document .write('<a id ='+ parent +'_'+ n +'href ='+ child [i] +'>'+ i +'< / a > '）;
n ++;
}
document .write（'< / div > '）;
vhmen_attach（父母，父母+_孩子，职位）;
}
function gwwebmenu_build（menu）
{
for （var i 在菜单中）gwwebmenu_build_aux（i，menu [i]，y）;
}
尝试调试页面时，缩进代码并确保具有匹配的识别区域会很有帮助。
如果您自己调试代码，朋友会更好...我也在我的网站上创建了这样的菜单逻辑......我正在给你以下提示..
受保护 void Page_Load（ object sender，EventArgs e）
{
if （！IsPostBack）
{
mainMenu（）;
}
如果您自己调试代码，朋友会更好...我也在我的网站上创建了这样的菜单逻辑...我是给你以下提示..
<前lang =cs> 受保护 void Page_Load（ object sender，EventArgs e）
{
if （！IsPostBack）
{
mainMenu（）;
}
hi all,
am using 2 menu control when am clicking on the first menu items i need to get the submenu controls with default redirection to first item of the sub menu control.
when am clicking on the menu item am getting the sub menu item but when am clicking on the sub menu item the total control is getting refreshed and what i selected getting cleared so as a result the sub menu is disappeared .
how to maintain main menu and sub menu when am clicking on the sub menu item.
thankyou
This is the code am using for please help me....
DataRowCollection drcMAINMENU;
MenuItem mainMENUITEM;
private PublicMenu objPM = new PublicMenu();
string Span = "<span class=mainmenu style=font-weight:bold;text-transform:uppercase;font-size: 12px;display: none;>";
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
if (Request["parentid"] != null)
{
ViewState["Ilocal"] = Convert.ToString(Request["parentid"]);
}
if (Request["menuid"] != null)
{
ViewState["link"] = Convert.ToString(Request["menuid"]);
}
// ctrlMENU.Items[0].Selected = true;
}
}
public void mainMenu()
{
int ilocal = 0;
DataSet dsMenu = objPM.GetMainMenuDetails();
drcMAINMENU = dsMenu.Tables[0].Rows;
mainMENUITEM = new MenuItem(Span + "<span class=Select>Home</span></span>");
mainMENUITEM.NavigateUrl = ConfigurationSettings.AppSettings["InternalUrl"].ToString() + "Default.aspx";
ctrlMENU.Items.Add(mainMENUITEM);
ctrlMENU.ForeColor = System.Drawing.Color.White;
foreach (DataRow drMAINMENU in drcMAINMENU)
{
string strSubMenu = string.Empty;
string submenuItem = drMAINMENU["MenuId"].ToString();
mainMENUITEM = new MenuItem("<span class=mainmenu style=font-weight:bold;text-transform:uppercase;font-size: 12px;display: none;>" + drMAINMENU["Title"].ToString() + "</span>");
ctrlMENU.Items.Add(mainMENUITEM);
string t_Url = (drMAINMENU["IsExternalLink"].ToString() == "N" && drMAINMENU["IsContent"].ToString() == "Y") ? "Content.aspx?menuid=" + submenuItem : drMAINMENU["ExternalLink"].ToString();
if (drMAINMENU["IsExternalLink"].ToString() == "N" && drMAINMENU["IsContent"].ToString() == "Y" && drMAINMENU["IsLastLevel"].ToString() == "Y")
{
mainMENUITEM.NavigateUrl = ConfigurationSettings.AppSettings["InternalUrl"].ToString() + t_Url;
}
else if (drMAINMENU["IsExternalLink"].ToString() == "Y" && drMAINMENU["IsContent"].ToString() == "N" && drMAINMENU["IsLastLevel"].ToString() == "Y")
{
mainMENUITEM.NavigateUrl = ConfigurationSettings.AppSettings["InternalUrl"].ToString() + t_Url;
}
ilocal = ilocal + 1;
HtmlAnchor a = (HtmlAnchor)this.FindControl("ctl00_Public_MenuControl1_ctrlMENU_1");
// a.Attributes.CssStyle = "select";
}
if (Session["SubMenuItems"] != null)
{
DataSet ds = (DataSet)(Session["SubMenuItems"]);
if (ds.Tables[0].Rows.Count > 0)
{
string Flag = "ID";
GetSubmenuItems(ds.Tables[0].Rows[0]["MenuId"].ToString(), Flag);
}
}
}
public void ctrlMENU_MenuItemClick(object sender, MenuEventArgs e)
{
string text = e.Item.Text;
text = text.Remove(0, Span.Length);
text = text.Replace("</span>", "");
GetSubmenuItems(text,"NAME");
}
private void GetSubmenuItems(string MainMenuItem,string Flag)
{
MenuItem childMENUITEM;
ctrlsubmenu.Items.Clear();
int ilocal = 0;
string tUrl;
string submenu_landingpageurl = "", submenuurl = "";
DataSet dsSUBMENU = objPM.GetSubMenuDetails(MainMenuItem,Flag);
//Session["SubMenuItems"] = dsSUBMENU;
DataRowCollection drcSUBMENU = dsSUBMENU.Tables[0].Rows;
int blankspacecount = 0;
string blankspaces;
foreach (DataRow drSUBMENUITEM in drcSUBMENU)
{
blankspaces = "";
ilocal = Convert.ToInt32(drSUBMENUITEM["parentid"].ToString());
tUrl = drSUBMENUITEM["IsExternalLink"].ToString() == "Y" ? drSUBMENUITEM["ExternalLink"].ToString() : "Content.aspx";
ViewState["Url"] = tUrl;
tUrl = tUrl + "?parentid=" + Server.UrlEncode(ilocal.ToString()) + "&menuid=" + Server.UrlEncode("smenu" + drSUBMENUITEM["Title"].ToString()).Replace(" ", "%20") + "&mid=" + Server.UrlEncode(drSUBMENUITEM["MenuId"].ToString());
if (drSUBMENUITEM != null)
{
submenu.Visible = true;
string submenustring = "<div class=\"subNav\">";
submenustring += "<table><tr><td onclick=\"return funRedirect('" + ConfigurationSettings.AppSettings["InternalUrl"].ToString() + tUrl + "');\"><a style=font-weight:bold;text-transform:uppercase;text-decoration:none;>" + drSUBMENUITEM["Title"].ToString() + "</a></td></tr></table>";
submenustring += "</div>";
childMENUITEM = new MenuItem(submenustring);
ctrlsubmenu.Items.Add(childMENUITEM);
}
else
{
submenu.Visible = false;
}
}
DataRow drSUBMENUITEM1 = dsSUBMENU.Tables[0].Rows[0];
for (int i = 0; i <= 0; i++)
{
blankspaces = "";
ilocal = Convert.ToInt32(drSUBMENUITEM1["parentid"].ToString());
tUrl = drSUBMENUITEM1["IsExternalLink"].ToString() == "Y" ? drSUBMENUITEM1["ExternalLink"].ToString() : "Content.aspx";
ViewState["Url"] = tUrl;
tUrl = tUrl + "?parentid=" + Server.UrlEncode(ilocal.ToString()) + "&menuid=" + Server.UrlEncode("smenu" + drSUBMENUITEM1["Title"].ToString()).Replace(" ", "%20") + "&mid=" + Server.UrlEncode(drSUBMENUITEM1["MenuId"].ToString());
if (drSUBMENUITEM1 != null)
{
ctrlsubmenu.Items[0].Selected = true;
string s=ConfigurationSettings.AppSettings["InternalUrl"].ToString() + tUrl;
string test="<script>window.location="+s+"</script>";
Page.ClientScript.RegisterStartupScript(GetType(),"reditrct","funRedirect("+s+")",true);
// Page.RegisterClientScriptBlock("redirect",test);
}
else
{
submenu.Visible = false;
}
} 解决方案
What you seem to be describing is:
<TABLE style="WIDTH: 900px" align=center> <TBODY align: center> <TR align=center> <TD align=center> <DIV class="gwhomeMenu"> <DIV class= "horz_menu"> <A id=gwhomeMenu_home href="WelcometoGoodwoods.htm">Home</A> <A id=gwhomeMenu_aboutus href="AboutGoodWoods.htm">About Us</A> <A id=gwhomeMenu_products href="ProductsGoodWoods.htm">Products</A> <A id=gwhomeMenu_services href="ServicesGoodWoods.htm">Services</A> <A id=gwhomeMenu_contactus href="ContactGoodWoods.htm">Contact Us</A> <BR> </DIV> </DIV> </TD> </TR> <TR> <TD height="50"></TD> </TR> </TBODY> </TABLE>
Which displays a menubar, with text that changes color, a background image of the button that changes, all onMouseOver.
These functions are from a .js file that I wrote, that was based on another sample. The functions below work with the code above, to display the menu-bar. Properly coded, it will display vertical sub menus-related to the horizontal bar button, with each vertical sub-menu button capable of generating sub horizontal buttons etc.
{ var win = window.open(); for (var i in x) win.document.write(i+' = '+x[i]+'<br>'); } var vhmen_timeout = 50; function vhmen_show_aux(parent, child) { var p = document.getElementById(parent); var c = document.getElementById(child); p.className = "active"; if (c.offsetWidth <= 0) { c.style.position = "absolute"; c.style.visibility = "visible"; c.style.display = "block"; } var direction = undefined; if (p.parentNode && p.parentNode["vhmen_position"] == "x") direction = p.parentNode["vhmen_direction"]; var top = (c["vhmen_position"] == "y") ? p.offsetHeight : 0; var left1 = (c["vhmen_position"] == "x") ? p.offsetWidth : 0; var left2 = (c["vhmen_position"] == "x") ? -c.offsetWidth : 0; var left3 = (c["vhmen_position"] == "x") ? p.offsetWidth : 0; for (; p; p = p.offsetParent) { if (p.style.position != 'absolute') { left1 += p.offsetLeft; left2 += p.offsetLeft; top += p.offsetTop; } left3 += p.offsetLeft; } if (direction) { left = (direction == 'right') ? left1 : left2; c['vhmen_direction'] = direction; } else { left = (left3+c.offsetWidth < document.body.offsetWidth) ? left1 : left2; c['vhmen_direction'] = (left3+c.offsetWidth < document.body.offsetWidth) ? 'right' : 'left'; } c.style.align = "center"; c.style.position = "absolute"; c.style.visibility = "visible"; c.style.display = "block"; c.style.top = top +'px'; c.style.left = left + 'px'; } function vhmen_hide_aux(parent, child) { document.getElementById(parent).className = "parent"; document.getElementById(child ).style.visibility = "hidden"; document.getElementById(child ).style.display = "block"; } function vhmen_show(e) { var p = document.getElementById(this["vhmen_parent"]); var c = document.getElementById(this["vhmen_child" ]); vhmen_show_aux(p.id, c.id); clearTimeout(c["vhmen_timeout"]); } function vhmen_hide() { var c = document.getElementById(this["vhmen_child"]); c["vhmen_timeout"] = setTimeout("vhmen_hide_aux('"+this["vhmen_parent"]+"','"+this["vhmen_child" ]+"')", vhmen_timeout); } function vhmen_attach(parent, child, position) { p = document.getElementById(parent); c = document.getElementById(child ); p["vhmen_child"] = c.id; c["vhmen_child"] = c.id; p["vhmen_parent"] = p.id; c["vhmen_parent"] = p.id; c["vhmen_position"] = position; p.onmouseover = vhmen_show; p.onmouseout = vhmen_hide; c.onmouseover = vhmen_show; c.onmouseout = vhmen_hide; } function gwwebmenu_build_aux(parent, child, position) { document.getElementById(parent).className = "parent"; document.write('<div class="vert_menu" id="'+parent+'_child">'); var n = 0; for (var i in child) { if (i == '-') { document.getElementById(parent).href = child[i]; continue; } if (typeof child[i] == "object") { document.write('<a class="parent" id="'+parent+'_'+n+'">'+i+'</a>'); gwwebmenu_build_aux(parent+'_'+n, child[i], "x"); } else document.write('<a id="'+parent+'_'+n+'" href="'+child[i]+'">'+i+'</a>'); n++; } document.write('</div>'); vhmen_attach(parent, parent+"_child", position); } function gwwebmenu_build(menu) { for (var i in menu) gwwebmenu_build_aux(i, menu[i], "y"); }
When trying to debug your page it is helpful to indent your code and make sure to have matching identification areas.
Friend better if you urself debug your code...i have also created such menu logic in my website too...i am giving you following hint..
protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { mainMenu(); }
Friend better if you urself debug your code...i have also created such menu logic in my website too...i am giving you following hint..
protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { mainMenu(); }
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