Web Forms :: Calculate Button And Adding New Values?
May 4, 2010
I have a calculator page that calculates the carbon footprint of electricity and water, which has two textboxes and two drop down lists and a button.
When a user enters a number in the two text boxes, each number is multiplied by the other number given in the dropdown list ,and then clciks on the submit button he/she gets the result in a label as well as the values he entered.
what I need to do is enable the user to add another calculation in the same form and i need the label to keep the result. so, the user can enter new values in the form as the fields will be cleared and clicks on the calculate buttin again, gets the result and the total result is added to the previouse one.
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Feb 22, 2010
on button click the total footer value disappear .
As i want to show / Retain the total value in the footer template even after button click or post back ...
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Jan 6, 2010
my code is calculate to current rowafter update quantity but other rows don't affect and not calculate i need to calculate all rows i think i need to use for loops but i dont know how to do it
[code]....
[Code]....
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May 11, 2010
I am using ASP.NET 2008 Visual Basic Language. I tried to create a function that multiply two values from two different tables and get the result presented in a label. The value is retrieved by referring to the primary key after the user selects from a DropDownList which is in another page using sessions.
I tried to build this code in the Load_Page event but it didn't display for me the total.
[Code]....
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Dec 19, 2012
I have 1 gridview
In gridview there are 4 asp textbox
textbox 1 = key in number
textbox 2 = key in number
textbox 3 = key in number
textbox 4 = total
How do I sum all the value that are key in from textbox 1 to 3 and automatically display in textbox 4.
Let say:
textbox 1 = 1
textbox 2 = 2
textbox 3 = 4
total:
textbox 4 = 7
if I key in one of the textbox , the value also appear in textbox 4
textbox 1 = 1
.
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automatically appear textbox 4 = 1
.
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textbox 2 = 2
.
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automatically appear textbox 4 = 3 ...
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Nov 22, 2013
How to calculate a sum which get the data from a set of textboxes in asp.net page? Can write in code behind c#? Can assign the textbox value to a variable then calculate the sum at code behind them show the answer to the asp.net page? Or is it have to write javascript to perform those action?
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Mar 17, 2011
I have a rather large formview that asks for a variety of input values (physical totals vs pos report totals). I have created vb code to calculate the differences and subtotals of various types prior to inserting the data so people can check for entry errors.
Its a closing reconciliation form. Here's the problem: If they forget to enter 0 in a field that doesn't have any totals, a big ugly error message displays. I would like to avoid this. I can tell them until I am blue in the face to remember to enter 0 and not leave any blank fields, but realistically its going to happen and I need to handle it in the programming.
I have been struggling to either default the values to zero to start with, replace a null textbox with 0 before the calculate runs...but I can't get anything to really work. What is the best way to handle this?
Here is the aspx page:
[Code]....
And the code behind page with working "Calculate" as long as fields are not left blank (I took out all the test code that made it not work at all)
[Code]....
Finally, the error message I am getting is the following:
[Code]....
I can't seem to find the right combination of programming to account for the "" string to be 0 so that it will add or subtract values in my calculate. I have my sql table setup with default values of 0 so if a field is left blank it will be entered into the database as 0 and not null. It is really just for my inserting of a reconciliation and the running of Calculate Totals to double check their work prior to inserting into the database.
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Nov 9, 2010
I have 5 gridviews, all of of them have a Checkbox template field. I already did SUM of a specific column in the gridviews and displayed the Total in the gridview footers.
There is a submit button on the page as well.(this is not in a template column in the gridview)
what i do is select some rows in the gridviews by ticking the checkbox. Then I click on the submit button and the values change in the database and page refreshes with the new Total in the gridview footers. Any row that was ticked. the checkbox for that row in the gridview gets disabled. so cannot change the value again.
Now i want a way to show a popup with a SUM of those rows that are ticked recently and the SUM of already ticked and disabled rows before the values change for the ticked rows in the gridview when the submit button is clicked.
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Aug 12, 2010
Is it possible to add values in textboxes as well as subtract values? Scenario:
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Nov 8, 2013
How to calculate sum of item template rows
<asp:GridView ID="GRDMonthly" runat="server" AutoGenerateColumns="False"
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[Code].....
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Sep 30, 2010
nable to cast object of type 'System.Web.UI.HtmlControls.HtmlForm' to type 'System.Web.UI.HtmlControls.HtmlGenericControl'.Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidCastException: Unable to cast object of type 'System.Web.UI.HtmlControls.HtmlForm' to type 'System.Web.UI.HtmlControls.HtmlGenericControl'.Source Error:
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/* MasterPage mp = (MasterPage)this.Master;
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Aug 12, 2010
I have used renderbegintag to create tags dynamically,and i have created html button tag by this ,but i am not getting how to redirect page by passing querystring of id on the click of that button.My code is:
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writer.AddAttribute(HtmlTextWriterAttribute.Id, "imgDetails");
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May 14, 2010
I'm just wondering if anyone can assist me with this gridview problem
I have this Sql statement that outputs a gridview like this
Job Location Activity 1 Activity 2 Activity 3
Job1 Location1 0 0 1
Job2 Location2 1 0 1
Job3 Location3 0 1 0
* These columns are placeholders
I want to include a footer total that looks like
Job Location Activity 1 Activity 2 Activity 3
Job1 Location1 0 0 1
Job2 Location2 1 0 1
Job3 Location3 0 1 0
Final Total 4
Im not binding the database to the gridview via design view I'm binding it programatically in the default.aspx.cs file
So far the only tutorials I've encountered are ones the have the database bound through design view and gridviews with only one column that can be added. In my particular example I have multiple columns that need to be added and I have already bound the data to the gridview.
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Feb 11, 2010
Is it possible to add values from different database rows to a dropdownlist?
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I guess my primary question is: How do I create a database with product size attributes?
I apologize if this thread should be in another forum, but if the dropdownlist can display two database rows I'll settle with that solution.
Could the database look like this:
table1: product
PK: productID
table2: productAttribute
PK: productID
PK: attributeValueID
table3: attributeValue
PK: attributeValueID
FK1: attributeNameID
table4: attribute
PK: attributeNameID
name
If this is right: How do I make the dropdownlist display the different sizes?
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Dec 22, 2010
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Apr 19, 2010
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I would hope to be able to do this within a updatepanel and use AJAX async postback.
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Jan 3, 2011
I just want to add and attribute called "pubID" to an image button with the value I give it and then call that value on the image button click event. This image button was created dynamically as well. At the moment this code is not working. When debugging it looks like Pubid is getting assigned a value but on the click event, the attribute isn't being retrieved correctly.
--added attribute
[Code]....
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Jul 14, 2010
May seem like an easy question, but can I add a URL to submit button -
Other than using Response.Redirect ?
Further Info: What i'm trying to do is a lighbox control to a button which fades out the screen and forces them to read a warning message.This would work in HTML like this:
< a h r e f =" images/image.jpg" rel="lightbox"> link < / a >
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Jan 15, 2010
Controls.Add(linkButton)
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Aug 12, 2010
I have an upload control inside a panel and I am wanting to restrict the file types. I have found the following regExp but I'm unsure where to put it?
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Jul 22, 2010
I have a simple page that displays a gridview once 3 criteria are inputed. I would like to add an submit button so that the date just not auto populate the gridview.
Here is my code:
[Code]....
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Jul 28, 2012
I have checked this article link here and its good.. What i want is how can i avoid the button.. mean add the row dynamically without using the button click event.. Instead use text changed event..
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Jun 2, 2010
i am trying to add new content to an access database using data services - this is the code i am using at the moment:
[Code]....
But this is the error that i am getting
[Code]....
i have been trying to user different appostraphis ( " ' ") but i get the same error
the thing that i am more confused about is that i have another service which adds data to another DB table, and it does work (!) so effectively this is a dublication (with different dataset names)
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Oct 30, 2010
public void addComment(object sender, ImageClickEventArgs e)
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