Forms Data Controls :: How To Enforce Calculations
Jan 24, 2011
I want to enforce some calculation to my project, my requirement as follows. I have txtQtyReq,txtQtyyRec,txtQtyShor(All are 3 textboxes) on load all the 3 textbox/columns should show as "0".(QtyShort=QtyReq-QtyRec)I need to calculate/implement this in txtQtyShort column. when i give a value in txtQtyReq as "50" ,it should calculate QtyShort and display as 50.
txtQtyReq txtQtyRec
txtQtyShort(=txtQtyReq-txtQtyRec)
0 0 0
50 0 50
50 20 30
txtQtyReq=Quantity Required
txtQtyRec=Quantity Received
txtQtyShort=Qunatity short
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Similar Messages:
Jan 28, 2011
I want to enforce some calculation to my project, my requirement as follows. I have txtQtyReq,txtQtyyRec,txtQtyShor(All are 3 textboxes) on load all the 3 textbox/columns should show as "0".(QtyShort=QtyReq-QtyRec)I need to calculate/implement this in txtQtyShort column.when i give a value in txtQtyReq as "50" ,it should calculate QtyShort and display as 50.
txtQtyReq txtQtyRec txtQtyShort(=txtQtyReq-txtQtyRec)
0 0 0
50 0 50
50 20 30
txtQtyReq=Quantity Required
txtQtyRec=Quantity Received
txtQtyShort=Qunatity short
I got an excellant solution as follows.
[Code]....
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Jun 3, 2010
I have a gridview with the following columns: months, number of injury, expenses. my month column is a string, my number of injury column is a number and my expenses column is a number. I need to first obtain the month column as an integer and then obtain the number of injury column in my gridview. Once these columns are obtained, I want to be able to get the total number of injuries. How do I solve the problem. First obtain the month column and change it to an interger or gridview
Next obtain the injury column and then add each row in the injury column to get the total number of injuries.
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Jun 10, 2010
In a details or form view I have a number of entries from a database
For example:
Pass-Attempts, Passes-Completed, AvgYds, TdPercentage
If I want to perform a simple calculation on these values, and then display them in the same details/form view
Such as:
QBRating =((Passes-Completed/Pass-Attempts)*100)+(AvgYds*5)+(TDPercentage*4)
With the ideal result being:
Pass-Attempts, Passes-Completed, AvgYds, TdPercentage, QBRating on the same Details/Form view.
So basically I need to programmatically get at those values, perform calculations on them and them display them back in the same control.
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Jan 17, 2011
I have a FormView Bound to an SQL data source. In the DATA there are 2 columns that i would like to multiply together and display there rate
<asp:TextBox ID="txtPeople" runat="server" Text='<%# Bind("People") %>'></asp:TextBox><asp:TextBox ID="txtRate" runat="server" Text='<%# Bind("Rate") %>'></asp:TextBox><asp:TextBox ID="txtTotal" runat="server" Text='<%# Bind("Rate * People") %>'></asp:TextBox>
This is just an example above but i believe it shows what i am trying to do, there is no calculated column in the database so i can not bind to that directly, and i can not just add the column to the data as its not in my permissions. So how do "Bind" the value of two columns multiplied together to a third text box?
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Oct 26, 2010
I have a databound gridview that displays basic customer information. I have added a template field to the gridview, but I am having trouble with the coding for the RowDataBound event. I need to take the sum of all payments made by the customer in each row and store it in a variable for further calculation. Also, I need to take an integer value (say 30, representing 30 days) and add it to a date, and return a date.
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Feb 23, 2011
I'm trying to extend the GridView into a custom/user control "WorklistGridView". And I'm not quite sure how to do it... so here's what I need:Every row needs to have a control (either a boundfield or a templatefield with a label, etc.) that contains the StepID (which is a column returned in the data set).I want to be able to use the WorklistGridView as a base class and extend it to something like "XyzWorklistGridView", where that child class would have a few more controls in the row template.
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May 23, 2010
I am doing small banking project in that i want to create calculations on interest. in which i have to create that in stored procedures or userdefined funcations
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May 13, 2010
I'm building a site where users can purchase 'credits' and buy items on the website with them. I'm wondering, what is the best way of storing the user's overall Credits value? Is it best to do a SUM() of all Credits they have purchased before from the 'Credits.Orders' table, or for performance purposes when they add credits to their account, should it increase a 'Credits' field value in a 'Users' table? For consistency purposes I would like to go with the first option, but the second option sounds better in terms of not running loads of pointless calculations every time I need to know their credit value.
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Nov 16, 2010
How do I ensure and enforce that all write operations to my MS SQL Server DB are transactions-based?
The reason I want to do this is that the DB contains financial account data and operations that fail halfway through some set of changes should not be able to mess up the database by mistake or by crashing.
The application is written in ASP.NET C#.
Edit:
There is a DAL but it does not (yet) require transactions for changes.We wrote the DAL ourselves. We did not use ORM.
I know how to perform one transaction from ASP.NET.
I want to ensure that all changes are made in transaction form so that if the application throws some exception in the middle, there will be no change to the database.
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Oct 6, 2010
How to enforce logon hours validation
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May 19, 2010
I have checked Enforce Referential Integrity in my relationship section in my access database.By this way Can I delete child records when I delete the perent record?
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Feb 17, 2011
for some SQL queries I know the expected number of rows that must be affected by UPDATE, DELETE or INSERT statements. It could be a number such as 1 or a range such as 0-1 or 1-2 etc.
What is the best way to enforce that this is the number of affected rows and that otherwise an exception is thrown?
Also, can I limit the number of rows affected for UPDATE/DELETE/INSERT to say 1 row and otherwise get an exception?
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Apr 8, 2010
I am having 2 textbox fields named date of birth and age. I have coded in C# in the textchanged event of Date of Birth text field to calculation age and display it in the age text field. For this i have given autopostback true to Date of birth field. I want to calculate age without autopostback,
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Sep 6, 2010
I had no problem with this in Visual Studio 2008 but it seems that VS 2010 is having an issue, and I'm betting it's probably me.I have a solution with an ASP.NET Web Site Project and a few C# projects (BLL, DAL, Tests in NUnit). I have configured the build process for the test project to automatically run NUnit to run the tests. I would like to ensure that the BLL and DAL projects build before the test project so that the tests will run against the latest compiled version (yes, I know I could do this all in one project, but I'm choosing not to -- please bear with me :) )
So, I set the dependencies of the Test project to include the BLL, DAL, and Web Application projects, and the build order shows BLL, DAL, Web Application, and then Tests. However, I noticed that the BLL doesn't actually build when I build the Test project.Any idea what this could be or any option I might be missing to force the other projects to build when I build the Test project?
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Sep 17, 2010
I have a website running on iis 5.1 with asp.net 2.0. Where in the windows registry can I change the requirtements for some the security features? For example, I do not want to enforce strong passwords and I do not want to use the secret question and answer features.
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Jul 15, 2010
I'm new to .NET and converting and proper way to convert strings to other values. Specifically, here is a situation I'm facing:
I'm returning two values from a datasource as strings. One values is a representation of a span of time, and another is a count of how many attempts to access a system took place within the span of time.
Given these parameters (for example):
Span of time: 00:01:00
Attempts: 13
I'd like to calculate a third value that shows how many seconds each attempt to connect took place during that span of time. This involves converting the time span to seconds and then dividing by attempts. Where I am getting lost is with the conversion of types. I know the span of time needs to be converted to a date, reduced to seconds, then converted to a number to be divided by the attempts field, also converted to a number.
I've been playing around with code segments like this all morning to no avail:
VBNET Code:
Dim thisTime As String = "00:01:00"
Dim thisAttempts As String = "13"
Label1.Text = thisTime
Label2.Text = thisAttempts
Label3.Text = Math.Round(Integer.Parse(Convert.ToDateTime(Label1.Text)) / Integer.Parse(Label2.Text), 2)
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Oct 28, 2010
I have a hierarchy in my website project as below:
[CustomControl1 - folder]
- CustomControl1.ascx
- CustomControl1.css
- CustomControl1.js
I load css and js files dynamicaly based on which controls are used on particular page. I am doing it by using following code:
[code]....
where AddLinks method adds HtmlLink controls to Page.Header with href attribute set to coresponding css and/or js file.
I would like to add Interface that would force new controls to have AddLinks method but it is impossible since it is a static method. Because my custom controls inherit from Control class I cannot use abstract class and/or virtual methods either. How can I achieve my goal?
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Mar 22, 2010
I'm working on an ASP.NET web app where I'm using a Wizard to take the client through a large series of steps.One of the steps includes calculating a bunch of numbers on the fly... the numbers calculate properly but when I click "next" and then go back again... some of the numbers are not retained.
function CalculateFields() {
txtSellingPrice = document.getElementById('<%=txtSellingPrice.ClientID %>');
//I get all of the elements like this...
//...
var regexp = /[$,]/g;xt" and then "previous"
[code]...
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Nov 29, 2010
image of my listview: I want to total every row from my listview tallies total infected people and percentage
CityID | City | Population | Male | Female | Total | Percentage |
Population, male, and female columns are user inputs total column is male+female textbox value per row percentage= (total/population)*100 also per row to calculate total and percentage on every textchange
<asp:ListView ID="ListView1" runat="server">
<LayoutTemplate>
<table style="border: solid 2px #336699;" cellspacing="0" cellpadding="3" rules="all">
<tr style="background-color: #336699; color: White;">
<th>City</th>
<th>Population</th>
<th>Male</th>
<th>Female</th>
<th>Total</th>
<th>%</th>
</tr>
<tbody>
<asp:PlaceHolder ID="itemPlaceHolder" runat="server" />
</tbody>
</table>
</LayoutTemplate>
<ItemTemplate>
<tr>
<td> <asp:Label ID="lblCtyID" runat="server" Text='<%# Bind("CityID") %>' /> </td>
<td> <asp:Label ID="lblCty" runat="server" Text='<%# Bind("CityName") %>'/> </td>
<td><asp:TextBox ID="txtPopu" runat="server"/></td>............................
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Mar 20, 2010
i am building a small library system and i am at the part where i need to calculate wether the book is overdue and issue a fine atm i have a filter search which finds the Loan through the book copy number and ISBN number this displays the userid and the start date of which the loan was issued in a gridview, i then added a colum to the loan table to allow the "librarian" to insert the return date of the book with the update feature on the gridview, and then once then update is made make a calucation with those 2 dates
and either issue a output of "thanks for returning the book" or "you book is overdue by. and your charge is ..." depending on the results. the oveduerate is if its overdue by 14days then add £0.20 for everyday over sorry for the long description and thought id say iam just started to learn asp.net. i am building this in Visual Studio and C#
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Apr 21, 2010
I'm trying to render some text into a specific part of an image in a Web Forms app. The text will be user entered, so I want to vary the font size to make sure it fits within the bounding box.
I have code that was doing this fine on my proof-of-concept implementation, but I'm now trying it against the assets from the designer, which are larger, and I'm getting some odd results.
I'm running the size calculation as follows:
StringFormat fmt = new StringFormat();
fmt.Alignment = StringAlignment.Center;
fmt.LineAlignment = StringAlignment.Near;
fmt.FormatFlags = StringFormatFlags.NoClip;
fmt.Trimming = StringTrimming.None;
[Code]....
Now I have two problems.
Firstly, the text sometimes insists on wrapping by inserting a line-break within a word, when it should just fail to fit and cause the while loop to decrement again. I can't see why it is that Graphics.MeasureCharacterRanges thinks that this fits within the box when it shouldn't be word-wrapping within a word. This behaviour is exhibited irrespective of the character set used (I get it in Latin alphabet words, as well as other parts of the Unicode range, like Cyrillic, Greek, Georgian and Armenian). Is there some setting I should be using to force Graphics.MeasureCharacterRanges only to be word-wrapping at whitespace characters (or hyphens)? This first problem is the same as post 2499067.
Secondly, in scaling up to the new image and font size, Graphics.MeasureCharacterRanges is giving me heights that are wildly off. The RectangleF I am drawing within corresponds to a visually apparent area of the image, so I can easily see when the text is being decremented more than is necessary. Yet when I pass it some text, the GetBounds call is giving me a height that is almost double what it's actually taking.
Using trial and error to set the __minimumSize to force an exit from the while loop, I can see that 24pt text fits within the bounding box, yet Graphics.MeasureCharacterRanges is reporting that the height of that text, once rendered to the image, is 122px (when the bounding box is 64px tall and it fits within that box). Indeed, without forcing the matter, the while loop iterates to 18pt, at which point Graphics.MeasureCharacterRanges returns a value that fits.
The trace log excerpt is as follows:
Decrementing font size to 24, as size is 193×122 and limit is 212×64
Decrementing font size to 23, as size is 191×117 and limit is 212×64
Decrementing font size to 22, as size is 200×75 and limit is 212×64
Decrementing font size to 21, as size is 192×71 and limit is 212×64
Decrementing font size to 20, as size is 198×68 and limit is 212×64
Decrementing font size to 19, as size is 185×65 and limit is 212×64
Writing VENNEGOOR of HESSELINK in DIN-Black at 18pt, size is 178×61 and limit is 212×64
So why is Graphics.MeasureCharacterRanges giving me a wrong result? I could understand it being, say, the line height of the font if the loop stopped around 21pt (which would visually fit, if I screenshot the results and measure it in Paint.Net), but it's going far further than it should be doing because, frankly, it's returning the wrong damn results.
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Dec 23, 2010
I'm working in a ASP.NET project wich is suposed to do several financial calculantions involving potentiations, nth roots, etc. For this first operations, I can easily solve the problem using Math. But, for calculating work days - like Excel, or monthly loan payment, interest rates, etc. - like HP 12C, there is a library that implements these functions?
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Mar 1, 2010
I am creating a .Net application where I reset users' passwords in Active Directory using "SetPassword" method. With the way this application works I cannot use "CahngePassword"method.Is there a way (a work around) to enforce the password history when using "SetPassword" method and have a warning when the user is trying to reset the password to any the last five passwords?
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May 7, 2010
I would like to know how i could display data from an itemtemplate or any other form views/data-bound controls without having it render in tables? i know theres control adaptors, but is this reliable and will it work with asp.net 3.5?
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