I have 2 amount columns (Amount and TotAmount) in my gridview. In Amount column data comes from database. I want to display the total of amounts in Amount column in my TotAmount column (So there would be just one value in TotAmount column irrespective of the number of columns in Amount column). How can I do this.
View 18 Repliesi am trying to combine two boundfields into one calculated column to display in Gridview like:
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My gridview displays fields from a table and allows for edit, delete and insert. I need to add a column with a derived field which will be calculated every time the user is either entering a new row or editing the value of the weight field which is one of the fields of the gridview. This calculation is done in the fly and won't be saved in the database.
View 8 RepliesIs there a way to Sort a Gridview by a Calculated Column? I have a gridview with template fields using lablels and a linq datasource. Those columns sort just fine. I can not get the Calculated column to sort, because there is no sort expression to use...
View 4 Replieshow to create calculated column using boundfield in gridview?
i want to create a new column using the existing records?
how to create calculated column with gridview boundfield?
View 2 RepliesI'm a college intern at a small software company. I'm a novice when it comes to ASP.net and Expression Web, so sorry if these are obvious questions.
1. After figuring out how to get fields calculated before they get displayed (did this with SQL), I need to find a way to put certain characters before the output in the fields. I'm fairly certain this is done with a template field, but I have no idea how to touch those without making them blow up.
2. I would also like to have color in the GridViews rows or cells depending on a value returned from the database. Again, I think this would be done with template fields.
3. Thirdly, I need to be able to limit the characters in a few cells. I've searched and found some answers with this, but still Template fields go right over my head.
Split off from http://forums.asp.net/t/1595139.aspx:
I have an additional column called 'KPI %' in my gridview that calculates the percentage of two template fields and thus I cannot use the sortexpression on it. How can I sort the contents of the 'KPI %' column in ASC or DESC format?
I have a GridView bound to an ObjectDataSource. Most of the columns are directly databound, however one column is not - it's value is determined in code. The value is being calculated correctly at the RowDataBound event, however when there is more than one data row in the GridView, the calculated fields for all of the rows is blank, but the top row displays the bottom row's calculated field
View 2 RepliesI have tried several different approaches .SOMEONE PLEASE sow me how to sort on template field with a calculated value.Basically i have half the data i need in the DB and the other half comes from textbox1.textI take the text in textbox1 and pass it along with a value from the DB (Orig) to a function that returns miles.
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Whit the above method everything displays correctly but i cannot sort on that column .I also tried using the miles() function in my select statement for my datasource but that was a nightmare and couldn't get that to work i either got "undeclared function "miles()" or when i fixed that i got "orig" not declared.Sorry code is so jumbled , entire code is below:
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although i had to take the table that has my calculated column and make a view (so i could filter) and then bind the gridview to the view.
My question is as this.
1.) in order to get my calculated field i had to load my data into a table (as suggested)
2.)Add a column to the table and perform calculations
3.)make a dataview from the tables because i could not get the Gridview.datasource= ds.tables("loads").select("Deadhead <= " & sngRadius
4.)the largest of the 3 tables my query is based on contains about 7000 records. The way i have the logic & programming now everytime a new "truck location" is put in the textbox1 and "find loads/button1" is clicked. It calculates the deadhead miles of all 7000 records before filtering. I am filtering based on the deadhead miles.
Does anyone have any recomendation about how to speed this up a bit.
Also in order to get paging to work i had to rebind/filter the data again ... means looping through all 7000 records each time paging is called. This seems terribly ineffecient as i am already forced to use access instead of SQL.
Would i see a performance increase if i installed SQL or mySQL and create linked tables to the ones i use in access. or would access still be the bottleneck?
I don't know if the performance increase would be negligible as i still ultimately be getting the data from Access.
I have posted the entire code for the page below. When i originally started i didn't think there would be to much code so i left it all on one page instead of using code-behind. Would i gain anything by swapping to code-behind now?
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I need a form that displays three columns drawn directly from a database (no problems here) as well as two fields that require some complex calculations. Not only am I lost as to how to incorporate the calculations into the control, I don't know exactly how to write the calculations. I am working in Visual Web Developer 2008 with Vb.NET.
The first of the two fields should take the sum of all payments made by a given customer and divide it by a DailyMembershipRate, returning a DaysPaid variable. It should take this variable and a CustomerSince field for that particular customer and calculate a PaidThrough field.
The second of the two columns similarly requires the DaysPaid variable described above. It should subtract the CustomerSince field from the current date and return the value in days, giving a MembershipDays variable. Finally, it should subtract MembershipDays from the DaysPaid variable, again returning a value in days, and then multiply this by the DailyRate value for a Credit/Deficit field.
I realize this is a lot, but I haven't been able to find any documentation either online or in VWD or ASP.NET texts on this topic. I could really use some fellow user input.
I'm using a gridview to extract a set of records. I need to add another field to the gridview, which can calculate the difference between a date associated with each record and the current date.
View 6 Repliesi have a gridview binded with data when i hover mouse to row i want to display a image button to display date ,and when i click the button i want to display calender control for choose date, and next step after i choose date it will be must insert into database. and mean while a hidden label control will display and date shuld be display in it
View 2 RepliesI spent an hour googling and trying. No success. I want to get the digits behind the dot or comma for my calulcated column:
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But it just shows me a 0 and no other digits.
If the gridview binds to empty dataset, I need to still show a gridview so that users can ADD more using the textfields in the bottom of the footer template. Since the gridview is empty it won't bind not allowing rendering of the <footer template> I guess I should create a empty dataset if the gridview is empty. How do I check for this and can this be done in GridviewRowEventArgs
View 5 RepliesI have 3 grid views in my ASP.net application Viewing the data from different tables and search input with button( for all 3 grid view One input field), when i give input and click on serach button only one Grid view should be appear rest of the 2 gridviews should be hide but for me when i change the input values previous Grid view also remain stationed on the screen.Gridviews are GVOpenorder,GVShip,GvSchedule and input field name is txtSearch,button name is btnSearch.
View 8 RepliesAfter saving image in db how can we retrieve it in gridview like thumbnail size image and by clicking on image in gridview its open as preview. How can we do this in asp.net using c#.
View 1 RepliesHow to display empty GridView to insert new record if no data retreived for some record on the result from data table?Actually i am trying to give a user an option to add recrod from Gridview. On result of some query it is perfectly displaying data and a footer row with the insertion textbox but when there is no data in the gridview it is not displaying. It should display with footer having insert textbox.
View 5 RepliesWhy does the GridView does not display the value 0?
View 1 RepliesI'm using the following code to upload images, pdf files, word files and excel to a sql table as binary data. However, I can only figure out how to display the images but am clueless about the other type of files. What adjustments do I need to make so that with a button click I can access the other files? 't By the way, I'm using an image control to display the binary data and I'm aware that that will only work to display images, I just don't how to access all the other types of files once uploaded.
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I have a datatable with the following column names
ProviceID, ProvinceName, Year,
TPM, PM 10, PM 2.5, B(a)p
I'm trying to display data from this table in a gridview using template fields. Here's an example of a label in my item template
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When i bind data to this grid view, i get an error saying column "PM 2" was not found. For some reason, the program is dropping the .5 from the column name. I am exploring the possibility of replacing the number with alphabets only but this may not be possible as the end user may not find it user friendly. Is there a way for me to get around this problem? I get a similar problem with B(a)p, it drops everything after the B. Any ideas on how to get the gridview to bind column names with special chars in it?
I'm having a problem with the results of a Gridview. The SQL statement I use works in SQL Management Studio, but in my .NET app, it only display a few of the results. The part of the SQL that seems to be effecting it is in the where statement I use like:
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@Consultant comes from the value of a selected dropdown.
i have a gridview in each row of gridview row i hve 2 columns. in each row i need a button to enter date, when i click button one calender shld popup and data shld be display at end of the row
View 7 RepliesI'm quite new to ASP.NET programming, so excuse me if my question is dumb.I have the need of showing a grid (A GridView ?) of boolean values. But instead of showing checkboxes, I want to show the cells filled with black (value is true) or white (value is false). I understand I can do that by crafting a TemplateField and changing the style of the cell to select the correct background color and never displaying an actual value. I have not tried but I think it could work. The grid will contains 99% of boolean values and will contain something like 20 rows of 100 columns (2000 cells).
Now I would like to have that grid edited in place at client side, that is with JavaScript, changing the style of the cell when the user clicks on the cell. There would be a submit button somewhere to postback the whole thing.Is that possible ? Any hint for programming it ?Since I have a lot of webforms which needs to display that kind of grid, I would like to go further and design a custom GridView (or other control) that I could install in the toolbox and reuse easily.