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I you have any Security level project/task than always use Server Side code... but if no need to security than always use Client side because it's more faster than Server side... 
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It is a classic question for the answer - it depends...
Of course it has nothing to do with security - the data always coming from the server and always displayed on the client, so you have no problem to check security before it got displayed...
What you actually have to see is the requirements of your system, see what the units of the data and how those units are related to actions made in the system...For instance: is your data for display only, or you are going to edit it. Are you going to display a single page of data (small amount) or we are talking about a huge amount of it (paging)...
So it is not a question to answer as there is no one-size-for-all answer, but you have to analyze and design the system at hand...
Skipper: We'll fix it.
Alex: Fix it? How you gonna fix this?
Skipper: Grit, spit and a whole lotta duct tape.
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I have this link control that passes values via querystring to another page:
ItemTemplate>
<asp:HyperLink ID="hdReserve" class="js_siteid" AutoPostBack="false" runat="server" Text="Select"
Navigateurl='<%# String.Format("requestSummary.aspx?id={0}&groupsize={1}&facilityFees={2}&depoitAmt={3}&cancelAmt={4}&keydeptAmt={5}&extrahour={6}&facility={7}&hoursdiff={8}", CType(Container.DataItem, System.Data.DataRowView)("siteId") , ddlPartySize.SelectedValue,CType(Container.DataItem, System.Data.DataRowView)("RentalFeeAmount"),CType(Container.DataItem, System.Data.DataRowView)("DepositAmount"),CType(Container.DataItem, System.Data.DataRowView)("CancellationAmount"),CType(Container.DataItem, System.Data.DataRowView)("DepositAmount"),CType(Container.DataItem, System.Data.DataRowView)("ExtraHourAmount"),CType(Container.DataItem, System.Data.DataRowView)("AssetName"), hf1.Value) %>' />
</ItemTemplate>
A user clicks the link but before the user is redirected to requestSummary.aspx page, user is prompted to login.
After a successful login, the user is then taken to that page.
The issue I am running into is that the querystring values that are passed to requestSummary.aspx are now empty.
To resolve this, I attempted to assign these values to session and passed the values back to the label controls.
This is not working as the controls are still blank.
This is what I have tried, just one example to show what I have tried:
'retrieve querystring values for hoursdiff:
'the markup - label control:
<td style="font-weight:bold"> Extra Hours: <asp:Label ID="lblhourspassedval" runat="server" /></td>
Dim intHours As Integer = 0
intHours = Request.QueryString("hoursdiff")
'Assign intHours to session:
Session("intHours")
Pass the session value back to the label control:
lblhourspassedval.Text = Session("intHours")
So far, the label control is still blank.
What am I doing wrong?
I have been struggling with this for a whole day.
Thanks a lot in advance.
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This
Session("intHours")
needs to be
Session("intHours") = intHours
You might also need to amend where you are setting the text value
if (Session("intHours) Is Not Nothing) then
lblhourspassedval.Text = Session("intHours").ToString
end if
I don't know vb.net, the above is just a guess but I'm sure you can work it out.
The other issue you might be having is if you are always setting the session variable from the querystring and you visit the page when there is nothing in the querystring then your session variables will be cleared. You can check if the value you're looking for exists on the querystring using something like
if not string.IsNullOrWhiteSpace(Request.QueryString("yourvar")) then
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I need to extract the last data so i used the following code in MVC controller:
var cmpid = db.complaint_master.Where(m => m.uid == id && m.isvalid == 0 && m.dateofcomplaint == date).Select(m => m.compid).LastOrDefault();
i am getting an error:
LINQ to Entities does not recognize the method 'Int32 LastOrDefault[Int32](System.Linq.IQueryable`1[System.Int32])' method, and this method cannot be translated into a store expression.
Please help
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You have two options:
1. Sort the data in descending order, and use FirstOrDefault:
var cmpid = db.complaint_master
.Where(m => m.uid == id && m.isvalid == 0 && m.dateofcomplaint == date)
.Select(m => m.compid)
.OrderByDescending(id => id)
.FirstOrDefault()
;
2. Load all of the results into memory before using LastOrDefault:
var cmpid = db.complaint_master
.Where(m => m.uid == id && m.isvalid == 0 && m.dateofcomplaint == date)
.Select(m => m.compid)
.AsEnumerable()
.LastOrDefault()
;
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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i want to develop a wcf service which will send encrypted message / response to client and client will decrypt it and same way client will send data in encrypted format which wcf service decrypt it before taking any action.
i hard that wcf has message inspector which can do it but not getting any easy understanding sample code to achieve the same. so please give me a sample code how to achieve it. also give me sample code for both wcf service and client side code.
please do not tell me to use certificate rather guide me what kind of code i need to write at service end and client to encrypt/decrypt data. please discuss here or redirect me to relevant article. thanks
tbhattacharjee
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Tridip Bhattacharjee wrote: give me a sample code how to achieve it. also give me sample code for both wcf service and client side code.
You have been a CodeProject member long enough to know that this site does not provide code to order.
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Gimme gimme never gets,
don't you know your manners yet?
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I am trying to develop a appliction in asp.net webapi and knockoutjs VM, Please help me how to create new page and how to redirect to a new page from home page or masterpage.
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I have the following:
<asp:linkbutton id="LinkButton1" runat="server" onclick="LinkButton1_Click">Find Project :
<asp:textbox id="FindProject" runat="server" text="" cssclass="submit">
<asp:SqlDataSource ID="MySqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:MyConnectionString %>"
SelectCommand="SELECT * from myTable
WHERE Active= 'True'
AND myTable.Project = COALESCE(NULLIF(@FindProject, ''), myTable.Project)">
<SelectParameters>
<asp:ControlParameter ControlID="FindProject" Name="FindProject"
PropertyName="Text" />
</SelectParameters>
<asp:gridview id="GridView1" runat="server" datasourceid="MySqlDataSource1" ...="">
...
The SQL is simple and works ok with all of the values below in SSMS:
--declare @FindProject varchar(20) = 'A_Project'
--declare @FindProject varchar(20) = NULL
declare @FindProject varchar(20) = ''
select * from MyTable
WHERE Active = 'True'
AND MyTable.Project = COALESCE(NULLIF(@FindProject, ''), MyTable.Project )
Currently I can find an individual record with the linkbutton and FindProject textbox, it works ok
I want the page to show all records when the page is initially loaded, which it doesn't, it's just an empty list.
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Try setting CancelSelectOnNullParameter[^] to false:
<asp:SqlDataSource ID="MySqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:MyConnectionString %>"
SelectCommand="SELECT * from myTable WHERE Active= 'True' AND myTable.Project = COALESCE(NULLIF(@FindProject, ''), myTable.Project)"
CancelSelectOnNullParameter="False"
>
<SelectParameters>
<asp:ControlParameter
ControlID="FindProject"
Name="FindProject"
PropertyName="Text"
/>
</SelectParameters>
</asp:SqlDataSource>
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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excellent thanks, it worked.
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please help
Im using MySql database and asp.net c#
I have a listview like this
<asp:listview id="listview1" runat="server">
<item template="">
"
"
"
<%# val("pic ") %>
and its working now im struggling with paging .
i tried a datapager n i failed please help ...
which tool to use if i want to click a picture
from the listview and see full products details.
Thanks
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Hi All,
I am getting the following error when I try to run my ASP.Net web-forms application with my database credentials but I run the same application with my other colleagues database credentials I am not getting the error, then I thought may be my Db credentials are messed up then I tried to see if any difference exists in my authentication/authorization credentials, but I didn't find any difference between his credentials and my credentials. I am not understanding what could be the error and where am I missing, I am searching and trying to find the reason, but in this meantime if you know the solution please help me.
Here is my error on the VS crashing
[Window Title]
Visual Studio Just-In-Time Debugger
[Main Instruction]
An unhandled Microsoft .NET Framework exception occurred in w3wp.exe [3596].
The Just-In-Time debugger was launched without necessary security permissions. To debug this process, the Just-In-Time debugger must be run as an Administrator. Would you like to debug this process?
[V] View process details [Yes, debug w3wp.exe] [No, cancel debugging]
[Expanded Information]
Process Name: w3wp.exe
User Name: IIS APPPOOL\ELMS [Elevated]
And when I try to see it in the Windows log here it is
Faulting application name: w3wp.exe, version: 7.5.7601.17514, time stamp: 0x4ce7afa2
Faulting module name: clr.dll, version: 4.0.30319.18444, time stamp: 0x52717f9a
Exception code: 0xc00000fd
Fault offset: 0x0000000000009f66
Faulting process id: 0x141c
Faulting application start time: 0x01d07b8b53af8a8c
Faulting application path: c:\windows\system32\inetsrv\w3wp.exe
Faulting module path: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clr.dll
Report Id: a1f85976-e77e-11e4-8858-08002703e456
Please help me if this can be because of my settings in the IIS or SQL Server or Windows credentials in this meantime I am searching in the code for any possible problems. Thanks in advance.
"There is enough hatred in the world, lets spread love compassion and affection."
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Thanks I got it resolved, I had some problems in my database auth tables hence a function getting called repeatedly and killing the Worker process. I have resolved it.
"There is enough hatred in the world, lets spread love compassion and affection."
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hello :
how can i please build graph has two part ( bi-part) , have like node friends facebook and posts facebook , link between two nodes( node friend and node post ) may be : like , comment and share ??
and how please can use library JoinJS to do it
thank you very much
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You'll have to ask a much more specific question if you want a useful response.
The difficult we do right away...
...the impossible takes slightly longer.
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here i am trying to save memory stream data into zip files which could be many segment. please see my below code which works fine.
private void button2_Click(object sender, EventArgs e)
{
using (SqlConnection sqlConn = new SqlConnection(@"Data Source=BBATRIDIP\SQLSERVER2008R2;Initial Catalog=test;Integrated Security=True"))
{
string query = String.Format(@"SELECT [FilePath],[FileName],[FileData] FROM [TestTable]");
SqlCommand cmd = new SqlCommand(query, sqlConn);
cmd.Connection.Open();
System.IO.MemoryStream memStream = null;
ZipFile zip = new ZipFile();
zip.MaxOutputSegmentSize = 1024 * 1024;
using (SqlDataReader reader = cmd.ExecuteReader())
{
while (reader.Read())
{
byte[] data = (byte[])reader["FileData"];
memStream = new System.IO.MemoryStream(data);
string strFile = reader["FilePath"].ToString() + "\\" + reader["FileName"].ToString();
ZipEntry ze = zip.AddEntry(strFile, memStream);
}
}
zip.Save(@"e:\MyCustomZip.zip");
memStream.Dispose();
MessageBox.Show("Job Done");
}
}
i doubt the problem could be that approach stores the zip content in memory. Hence, when the zip content is huge, say exceeds 5 GB then then it crashes. so one guy said write to fileOutputStream mapped to physical file
guide me how to achieve to write to fileOutputStream mapped to physical file ?
i got a write up from this url http://gotoanswer.com/?q=Creating+Zip+file+from+stream+and+downloading+it
see the below code because i doubt probably this way i may be able to write to fileOutputStream mapped to physical file here is the code
MemoryStream stream = new MemoryStream();
dt.WriteXml(stream);
stream.Seek(0,SeekOrigin.Begin);
using (ZipFile zipFile = new ZipFile())
{
zipFile.AddEntry("Report.xml", "", stream);
Response.ClearContent();
Response.ClearHeaders();
Response.AppendHeader("content-disposition", "attachment; filename=Report.zip");
zipFile.Save(Response.OutputStream);
}
probably this line write to fileOutputStream mapped to physical file, just guide me am i on the right direction?
My Objective
i have to call a web service which will supply large stream of data and i need to save that stream to zip file but zip will not be created at server side rather it will be created at client end. due to large stream of data i need to break the zip file into small segment say 500MB or 1GB. one after one segment will download at client side one by one. when first one will end then user will get a file save dialog to save second segment. when all segment will be completed at client side then client could extract all segment to get one folder which may have many files and sub folder.
just guide me with code sample or suggestion how to achieve it with best performance. i have some constraint like i could not save stream data in multiple segment zip file at server side first and then start the download all segment one by one. so please read my requirement and guide me how to achieve it with best performance for large data.
if anyone observe this line of code
byte[] data = (byte[])reader["FileData"];
memStream = new System.IO.MemoryStream(data);
so i am storing something in memory stream first which is not good when data size would be huge. so guide me how could i achieve my task without using memory stream. rather directly i want to push the stream of data to dotnet zip library which will write each segment to OutputStream one by one.
looking for best guidance. thanks
tbhattacharjee
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Should this be in the c# forum?
Your calling a MsgBox
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u just notice only MsgBox. could not find out solution for my situation. u r amazing guy.
tbhattacharjee
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The example you referenced shows how to load a file on the server into a memory stream, and then convert it to a zip or compressed file, and then package the file for download. Then it will prompt the browser to download the zip file.
The 2nd example on your reference shows a better way to write the code, the first example that you copied is the version that doesn't work very well, and has problems. Use the 2nd example.
But in hindsight, the codes function doesn't match what you want to do.
Could of swore that you want to upload the compressed file to the server.
So in button click, on the client machine, in the first code block where you read the file data from the database, you just read the reader, and get the bytes and store them in a buffer. Then close the database, exit the data function.
Now chop up the bytes into 4096 blocks or what ever value you choose.
So measure the byte buffer and get it's length, then divide the length by 4096, that's how many loops you need.
And then seek or start at 0, and grab 4096 chuck of bytes, then write the file, grad the next 4096 chunk of bytes, write the file and so on.
Make sure your files exist in a temp storage place like App_Data.
Get that working smooth first before you try to upload the files to the server.
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Hi All,
I am using an asp.net application page to show the contents on the page with line break and OR image on the line break, I am not yet done with image itself, the problem is image appears at an inappropriate space or never appears as I have been trying with several options. Here I am putting this code that I am currently using. Can you please advice me or help me with any idea or code snippet or link any thing can be helpful, thank and your help is much appreciated as I am getting tired with this, searching on the internet no help so far but still trying.
Thanks in advance and here is the code.
<ol>
<li id="first-option" class="first-option">
<div class="paren"></div>
<div class="full col">
<label for="txtFirstName">First Name</label>
<asp:TextBox ID="txtFirstName" runat="server" ClientIDMode="Static" Enabled="false" />
</div>
<div class="full col">
<label for="txtLastName">Last Name</label>
<asp:TextBox ID="txtLastName" runat="server" ClientIDMode="Static" Enabled="false" />
</div>
<div class="full col">
<label for="txtBirthDate">Date of Birth</label>
<elms:DateTextBox ID="txtBirthDate" runat="server" ClientIDMode="Static" />
</div>
<div class="full col">
<label for="txtEmailAddress">Email Address</label>
<asp:TextBox ID="txtEmailAddress" runat="server" ClientIDMode="Static" />
</div>
<div class="full col">
<label for="txtEmailAddress2">Verify Email Address</label>
<asp:TextBox ID="txtEmailAddress2" runat="server" ClientIDMode="Static" />
</div>
</li>
<li id="or-divider" class="or-divider"><span></span></li>
<li id="second-option" class="second-option">
<div class="paren"></div>
<div class="full col">
<label for="txtStarsId" runat="server">STARS ID</label>
<asp:TextBox ID="txtStarsId" runat="server" ClientIDMode="Static" />
</div>
</li>
</ol>
<div class="action-buttons">
<asp:Button ID="btnSave" ClientIDMode="Static" runat="server" Text="Save" />
<asp:Button ID="btnCancel" ClientIDMode="Static" runat="server" Text="Cancel" />
</div>
CSS here, but with this the OR appears at the bottom and over the save and cancel buttons, which is not good and the numbers 1 and 2 appears over the first li's items, not useful and I don't why 1 appears only half, please help me if you can
or-divider
{
position:absolute;
border:none;
left:50%;
top:50%;
transform:translate(-50%,-50%);
}
.or-divider > span
{
background:transparent url('../../../images/OR-Small.png') no-repeat top center;
background-color:White;
position:absolute;
font-size:1.3em;
font-weight:bold;
top: inherit;
display: inline-block;
left: 40%;
height:20px;
width:80px;
z-index:1000;
}
<h1>or-divider + li</h1>
{
padding-top:30px;
}
.my-container > ol > li > span:first-child
{
display:block;
margin-bottom:5px;
}
.my-container > ol > li:first-child > select,
.my-container > ol > li:first-child > .chosen-container
{
width:100%;
margin-bottom:5px;
}
div.paren
{
position:absolute;
left:25px;
top:0;
height:47px;
width:15px;
background:transparent url('../../../images/Close-Paren.png') no-repeat left top;
}
<h1>first-option,</h1>
<h1>second-option</h1>
{
position:relative;
padding-left:50px;
}
<h1>first-option</h1>
{
background:transparent url('../../../images/1.png') no-repeat 2px 3px;
}
<h1>second-option</h1>
{
min-height:40px;
background:transparent url('../../../images/2.png') no-repeat left 33px;
}
<h1>second-option div.paren</h1>
{
background-position:left 30px;
height:77px;
}
"There is enough hatred in the world, lets spread love compassion and affection."
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