Web Forms :: How To Combine C# And Html/javaScript
Apr 17, 2010
i got a question that realy bothering me .... for the last 24 hours ...
how to combine c# and html/javaScript .....??
so ... the question :
for example i create a varible in my asp.net form .......
int variable = 2;
// some function .....
protect int makeItdouble(int variable)
{
return variable*2;
}
variable = makeItdouble(5); // some code i
and now i want to take this "variable" into my my javascript code .... this important thing is that i want thet this function will run first .... (the C# function)cus i take first my DataBase from the server and that prosses him more with some javascript code ...
Is there some way to intercept the HTML output stream in asp.net and make modifications? Eg using httpmodules or something? I know this is possible using java servlets and assume there must be an elegant way to do this with asp.net.
My purpose is to combine the many javascript files into one composite script which has been minified/packed, to make the page load faster.Eg, if my page normally outputs the following in the page head:
I am currently working on an c# application that minimizes and combines javascript/css asynchronously in the background to load on to the page which completed. Once the combined minimized file(s) are created, they are saved on to disk and all subsequent requests to the page will load this file.
The reason for this is to assist with performance on the page. I have a concern though, what if the combined file is large, eg 200 kb. Would it be better to combine in to 2 files if this was the case and have 2 separate http requests? The file will be gzipped and cached.
I am developing in asp.net mvc and using multiple javascript files.eg jquery, jquery-ui, google-maps my own js files etc.for performance should i combine these into one?if so how?
do you think it would be difficult to write a framework where mvc compares last html it output to the current html we want to output, and instead of sending the entire html, figure out what has changed and generate js code that will do the updating as compared to previous html? (presuming nothing was manually changed on the client using js).
I think I need to drop in some escape characters, but I'm not quite sure where. Here is the javascript function I'm attempting to call:
function setData(associateValue, reviewDateValue) { var associate = document.getElementById("Associate"); var reviewDate = document.getElementById("ReviewDate"); associate.value = associateValue; reviewDate.value = reviewDateValue; }
Here is the asp .net mvc line where I'm attempting to create a Radio button with a click event that calls the above function and passes data from the model as javascript parameter values.
<%= Html.RadioButton("Selected", item.Selected, new { onClick="setData('<%=item.Associate%>','<%=item.ReviewDate%>' )" } )%>
The above throws a bunch of compile issues and doesn't work. A call such as the following does call the javascript, but doesn't get the data from the model.
I'm new to ASP.net 3.5 and creating a test web site. I have created a master page for my web site with page content blocks. Now I want to use some javascript on the client side to provide for more interaction. I would normally create page specific Javascript functions and insert them in a <script block on the page. Howevere the Javascript script block must be placed before the <HTLM block. If I'm using Master Pages, it doesn't seem that I can use page specific Javascript functions. How can I resolve this problem? I think my options are
1) Don't use Javascript. Use ? instead to write client-side code. 2) Don't use Master Pages because you cannot use Page Specific Javascript functions. 3) Here's how to insert Javascript Functions in a Page with a Master Page.
I have a literal control in markup. I am generating html layout in C# and then set the text property of literal to the html.
StringBuilder sb = new StringBuilder() sb.Append("my html....."); lt.Tex = sb.ToString();
Some of these html elements need to post back and call a function on the server side. I googled and found a couple of posts using __doPotsBack, but it is not working. Below is how I am adding an image and adding onclick script.
I have a function that gets the position of a control.
[Code]....
All the function needs is an htmlcontrol being fed to it as the parameter (elemRef). I can declare a variable in Javascript of the same content page but different function and pass the parameter successfullly getting returned values. For example, if I have the following function:
function (getPosition) { var txtBox1 = document.getElemendById('<%=txtBox1.ClientID %>'); getPos(txtBox1); }
I will get the coordinates of the control txtBox1. But how can I accomplish this if I am calling this function from a javascript function or codebehind of the Master Page, or codebehind of the same content Page.
<asp:Button ID="test" runat="server" Text="test" OnClientClick="pageTracker._trackPageview('/bezichtigingsform/deeplink')" /> The OnClientClick-attribute is rendered as: onclick="pageTracker._trackPageview('/bezichtigingsform/deeplink')"
When I try to escape the single-quote like this "'" or with a double backslash preceeding the single quote, this does not work. I also tried it like this:
When someone requests a web form, I want to use Javascript to see what browser they use, and then point to the correct css files with Javascript. What is the simplest way to do that.
For example, in my header of the html form, I have a link that says:
How to maintain view state for the dynamically added html controls to a table using javascript(Below is the javascript which I am using to add HTML Controls Dynamically"). Because during the postbacks if I found any error while validating the data present in the dynamically added html controls, the controls are loosing their state and again I need to start adding rows and add data.
i am using oracle 10g... m showing some data for a particular record on my page.. i have some fields where i have to mention thr units like 'metre' or 'kg' as in my database those fields are numeric so can't make change directly in database.. so is thr any other solution so that i can display those fields with thr proper units at runtime like 'depth= 100 m'..
I'm having a little trouble with an upload of a file. I wanted to add today's date in the name of the file so that when a user uploads a file such as "image1.jpg" it would be saved into the server as "image120100319.jpg" and stored in the database as in a field as /myfolder/subfolder/image120100319.jpgthis script works when I comment the new additions which are
[Code]....
string SQL = "INSERT INTO my table (dailyFile) VALUES(@IMGDAILYFILE)"; cmd.Parameters.Add(new SqlParameter("@IMGDAILYFILE", SqlDbType.NVarChar, 80)); cmd.Parameters["@IMGDAILYFILE"].Value = "/myfolder/subfolder/" + destPath3.Substring(destPath3.LastIndexOf("\") + 1);
I have a page with a table and two button with the names (Submit and Add Rows) When I click on Add Row a new row will be added to a page(This is achieved using javascript), when I click on submit button I will be doing server side validation. If I found any error the error will be displayed on the page. During this process the controls which were added by me were loosing its state. As a result I need to add the rows once again and need to fill the data and click on submit button. Can any one let me know how to avoid this and see that the controls donot loose their states. So that there is no need for me to create rows once again if any validation fails on the server side.
just want to have a quick question about the value of dropdownlist listitem. I have a gridview which has its datakey value linked to a dropdownlist. In the dropdownlist I have many listitems. So I decided to combine some list items together. Originally, the values of the items are 1,2,3,4,5,6,7,8. But I want to have only 5 items by combining 5,6,7,8 into one listitem called "Others." So if the listitem "Others" is selected, the gridview will show all the records that have value 5 or 6 or 7 or 8. Is it possible? How can that be done?
I hope I made myself clear. Any question, I am happy to clarify.
how to combine two table from database into one gridview?
is it possible to add in a textbox into gridview?
why my checkbox is not showing in the gridview. this is the UI and the code. the UI display the data i retrieved from the database but why is the image and the checkbox not showing?
I have a couple of things that are not working with my Gridview:
1) I've managed to display 3 columns in one column (see code above) but the data is separated by commas, how can I display each data item in separate rows.
2) How can I make the data unique, as I have added the distinct command which I configured in my SQL data source
3) I need the rows to not display nulls, but at the moment it isn't displaying the row if one of the columns is null?
