Adding more drop down lists on link click - ASP.NET Discussion Boards

Its working perfectly friend ...
BUT the person who has posted the message shall be able to edit/delete it ...
While loading the messages from the database to the gridview, the userid is also loaded ...
is there any way, by which when the row is created in the gridview, and the corresponding event handler is called, the userids can be compared ...

Apurv

Hi !

Is there any known performance issues concerning run-time manipulation with Style object ?

I used ANTS profiler to profile my application and suddenly found that the following Style.Add statement is one of the slowests:

<br />
       tb = (Table)this.FindControl("ContentTable");<br />
       if (tb != null)<br />
       {<br />
           if (this.Language == InputLanguage.Hebrew)<br />
           {<br />
               tb.Style.Add(HtmlTextWriterStyle.Direction, "rtl");<br />
<br />
           }<br />
           else<br />
           {<br />
              tb.Style.Add(HtmlTextWriterStyle.Direction, "ltr"); <br />
           }<br />
        }<br />
<br />

If those performance issues are exist, is there any work around?

Thanks in advance.
Regarads,
Gennady

It should not have much performance issue just you are changing the style
Is the Page is very complex and big in size ? then it may take some time
to locate your ContentTable(not considerable time).
i don't think it is going to have performance issue.
This is what i think.
Any inputs from others ?

Thanks and Regards
Sandeep

If If you look at what you do not have in life, you don't have anything,
If you look at what you have in life, you have everything... "

Check My Blog

I agree.
But still if you feel that it is an over head. Another solution may be to pass your language name to the javascript and change the style at the client side itself.

Hi !

Page is not too complex. And findcontrol takes significantly less time:

FindControl - 0.0083
Style.Add - 0.606

As for passing this action to the client - I considered this alternative way, but first I'd like to understand - what is going wrong on the server side.

Thanks.
Regards,
Gennady

I guessed it
I don't know exact what happening ?
Is it degrading the performance ? Please let me know if you get the answer

Thanks and Regards
Sandeep

If If you look at what you do not have in life, you don't have anything,
If you look at what you have in life, you have everything... "

Check My Blog

Sandeep Akhare wrote:
Is it degrading the performance ?

This was the question !! Confused | :confused:

I think it is. At least the page load.

BTW, I forgot to note, that my application runs on VM (W2K3 on VMware ESX). If it is important ...

Regards,
Gennady

I have a drop downlist on server with a list of groups from the logged in user. When the user select a group from the drop down list I have to add a "Remove" link next to this drop down list and anohter link "Add to another group" down to this drop down list. If the clicks on this link then another drop down list with the groups except the one user selected in the above drop down list should be created on top of it. Does any one please tell me, how to do this and I have a sample image of my explanation in this link:

http://www.doxtop.com/Browse/3645e617/addtomultiplegroups.aspx?private_key=fca98fbb

Here is my code: I could add new drop down list on clicking the "Add another group" link but I need to get the items in the new drop downlist as items- the previous selected item.

<tr id="trGroups" style="display: none;">
       <td class="tdUpload10">Groups:</td>
   <td id="tdGroups"> <asp:DropDownList ID="ddlGroups" runat="server" CssClass="dropdown1" Width="50%">
</asp:DropDownList> <a href="" id="lRemovePub" runat="server" class="link1" style="display:none;vertical-align:top">Remove </a> 
<div id="divDDLMore" style="display:none;vertical-align:top">
</div> <div id="div1" runat="server" style="display:none">                              Attached successfully. <a href="" id="A3" runat="server" class="link1">Remove </a></div> </td> </tr>
<tr id="trMoreGroups" style="display:none;vertical-align:top" runat="server">
<td>  &nbsp; </td> <td>
 <a href="" id="lMoreGroup" runat="server" class="link1" onclick="AddToMoreGroups()">Add to another group</a>  </td> </tr>

Here is my javascript code:

function AddToMoreGroups()
{
var tdGroups = document.getElementById(tdGroups);
var ddlGroupId = document.getElementById(ddlGroupsId);
var trMoreGroups = document.getElementById(trMoreGroupsId);
var ddlGroups = '';
ddlGroups += '<select class=\"dropdown1\" style=\"width:50%\" id=\"ddlGroups\" runat=\"server\">';
var groupsArray = allGroups.split(';');
if(groupsArray != '')
{
ddlGroups += "<option value = '" +emptyGroup +"'>Select Group...</option>"
for(var i =0; i <groupsArray.length; i++)
{
var grArr = groupsArray[i].split(',');
ddlGroups += "<option value='"+ grArr[0] +"'>" +grArr[1]+"</option>"
}
}
ddlGroups += "</select> <a runat=\"server\" class=\"link1\" style=\"display:none;vertical-align:top\">Remove </a> <br/>"
divDDLMore.innerHTML += ddlGroups;
divDDLMore.style.display = '';
trMoreGroups.style.display = 'none';
}
function SetAudience()
{
var ddlGroupId = document.getElementById(ddlGroupsId);
var trMoreGroups = document.getElementById(trMoreGroupsId);
var lRemovePub = document.getElementById(lRemovePubId);

// Get Selected Value
var GroupId = '00000000-0000-0000-0000-000000000000';
if(ddlGroupId != null)
{
for(var i=0; i < ddlGroupId.options.length; i++)
{
if(ddlGroupId.options[i].selected == true)
{
GroupId = ddlGroupId.options[i].value;
if(GroupId != '00000000-0000-0000-0000-000000000000')
{
trMoreGroups.style.display = '';
lRemovePub.style.display = '';
}
break;
}
}
}
}

Any Ideas please!!!

If you're adding them on the client, they won't appear in viewstate, but they will appear in the form that gets posted back to the server.

Christian Graus

No longer a Microsoft MVP, but still happy to answer your questions.

As you can see in my code I could store the selected groupIds in a variable and add the items by checking these groupIds.

I have another problem here. I created my other drop down lists on client side using javascript and all the html code for the to a but on the JS side if i want to get the items I am popping up with the javascript error.

Here the first line is breaking. Can't get the items of my drop down list created on client side.

for(var i=0; i < ddlGroups.options.length; i++)
{
if(ddlGroups.options[i].selected == true)
{
grId = ddlGroups.options[i].value;
break;
}
}

(1) i want a master page fill from database in datalist control.
(2) when i click on datalist linkbutton open a new page related to click.
problem:-
(1) if i use in master page contentplaceholder and under this use datalist than datalist is not filled error return nullvalue exception.
(2) if i use without contentplaceholder then working properly but problem is that its goes out from panel.
how to solve this problem.
any body help me?
thanks in advance.

1 - put the datalist in the master page, what's the issue ?
2 - use target="_blank" to open a new page

Hard to say why you have an exception without seeing the code. Haven't you been asking this all day ?

Christian Graus

No longer a Microsoft MVP, but still happy to answer your questions.

Why are you using Master Page ?
Do you need to display datalist in each page ?
If yes do one thing instead of putting directly in Master Page
Put the DataList in the ASP.Panel and give it height and width.
You can't put the datalist directly in Contentplaceholder

Thanks and Regards
Sandeep

If If you look at what you do not have in life, you don't have anything,
If you look at what you have in life, you have everything... "

Check My Blog

code is
<asp:contentplaceholder runat="server" id="cph1" xmlns:asp="#unknown">
<asp:panel runat="server" id="pnl1">
<asp:datalist runat="sever" id="dl_1">
---code item template
---code item template and binding
commnad etc working properly but i use iframe for scrolling bar.
but open in iframe panel. not open new page.

Just remove the ContentPlaceHolder and have your datalist in the Panel
give proper height and width to your Panel
I don't understand why you are using Master Page ?
you should explain the necessity of using the master Page as it is common for all pages to show common Layout

Thanks and Regards
Sandeep

If If you look at what you do not have in life, you don't have anything,
If you look at what you have in life, you have everything... "

Check My Blog

If you are using Masterpage to display it in every page you should you use a common methods class instead. You can put your datalist in there and then call it from each page.
A masterpage is generally used to create a global layout for your application.

thanks your reply .
i want to know can i do this here like mine method.
and accroding to your method how can i design page through class like i create a datalist and their layout design and then code.
can i do this from classes.
i am new user of asp.net
thanks

Masterpage is generally used to create a layout for your website.
To create a common methods class just add a new class to your project in the app_code folder and add in your datalist code. Then you just write the name of the class followed by the function name and that will call it from your desired page.

umeshdaiya wrote:
i am new user of asp.net

Having got a 1 for giving a useful answer, I feel compelled to ask what the hell you're doing struggling with this if you're a 'new user of ASP.NET'. Have you bought some books and worked through them ? Read some articles ? Or is someone paying you to bumble through this with our help ?

Christian Graus

No longer a Microsoft MVP, but still happy to answer your questions.

thanks Mr. Christian Graus, Many many thanks for answering

You asked, asked again while your question is visible, ( which is very rude ) and then give me a 1 vote for trying to help. So, screw you, and your 'thanks'.

I assume this means I am right, you've bought no books, done no research and you're blindly flailing by asking poorly worded questions over and over. Good luck with that.

Christian Graus

No longer a Microsoft MVP, but still happy to answer your questions.

sorry for all disturbances. and sorry if i hurt you.
sorry again i am logout now.

Thats 1 down Christian many more to go...

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