I want to create a computed column in SQL SERVER and set the formula to this
([Category] + '.aspx?ID=' + [Post_ID])
Not working though......what am i missing? Category and Post_ID are current columns in the table
I have the following GridView:
<asp:GridView ID="gv" AutoGenerateColumns="false" runat="server">
<Columns>
<asp:BoundField DataField="productName" HeaderText="Item" />
<asp:BoundField DataField="unitCost" HeaderText="Cost" DataFormatString="{0:c}" />
<asp:BoundField DataField="originalCount" ItemStyle-HorizontalAlign="Center" HeaderText="Old Count" />
<asp:TemplateField HeaderText="New Count" ItemStyle-HorizontalAlign="Center" >
<ItemTemplate>
<asp:TextBox ID="NewCount" Width="20" runat="server" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
And I want to add a final 'Total' column that calculates (originalCount - NewCount) * unitCost and updates it as the user enters a number in the NewCount text box. Can I do this just with .net, or do I need to use Java? If the latter, how do I tell which Gridview cell to update?
I have a column that contain date (of type datetime), i also want to add another column that will contain 1 Or 0 depends if the value of date has passed the current date or not.
View 4 RepliesAfter looking for a driver to open legacy dbf drivers to connect, the next level trouble a have is this one: first, i can retrieve the data but when trying to filter by a parameter (somesc columns) i get an error. The error says about the database can't determine. The error is a columm tha is formated ( 1234 ) about 8 space, fixed. The values in the query appears like that. I resolve this by Trimming Ltrim(ColumnName) and i get this (1234). Now in SqlExpress, how can i filter by the new Trimmed Expression? (This is a primary key that the DBF use)
Sample:
SELECT column1, column2, column3
TABLE FoxProDB
Now
SELECT Ltrim(column1) as NewExp, column2, column3
TABLE FoxProDB
Where NewExpre = @NewExpres -Error-
Using vs2008 I have a SQL Server database attached to my web app. I want to use a computed time column in the database, along the lines of :
timenow is 1 column
hoursleft is another column
timeend would be another column.
I want timeend to = timenow + hoursleft. Is it possible to do that, and if so what would the formula be that I would enter into the computed column field, and, what datatype would the columns be, timenow and timeend I would expect to be time(7) and hoursleft an int. But is that correct?
I have a table of people with columns holding bits of info about them. I also need a variety of computed columns such as FileAs (lastname + ", " + firstname) and CityStateZip (you get the idea). I am wondering where best to put these definitions. It's worthwhile to note that the user will want to search for things as seen on the page, not the little atoms in the table. For example, searching on ", e" finds everyone whose first name begins with E. Typing ", az" to get everyone who lives in Arizona.
I noticed that linq-to-sql queries only recognize the fields in the table definitions, not any that are added in the partial class associated with the dbml. Linq-to-sql does work against computed columns in the database; however, the column definitions--especially for international address formats--will become very complex and much better handled in code.
i have designed a database into the vs 2008 mobile database. my batabase has three column column1(int),column2(int),column3(int) and i want to set the value of val(column3)=val(column1)+val(column2); how and where to set the computed column value.
View 2 RepliesI have a datatable in MS SQL that has FirstName and LastName. In MS SQL I created a computed field called FullName that was ((rtrim([LastName])+', ')+rtrim([FirstName])) I created a DataSet and a Business Logic Layer. In my typed DataSet I saw FullName in the listing when I created it. I am able to use FullName in my webpage. I use it to populate a dropdownlist. However, now when I make changes to the Customer Table I am getting this error message (seen below)
Question: Should I have created the field FullName in my MS SQL Table or should I have left it alone and somehow just added a column to the DataSet and placed an expression in the FullName column? The column "FullName" cannot be modified because it is either a computed column or is the result of a UNION operator. 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.Data.SqlClient.SqlException: The column "FullName" cannot be modified because it is either a computed column or is the result of a UNION operator. Source Error:
[Code]....
Source File: c:Users ottfarmsAppDataLocalTempTemporary ASP.NET Filesinternalauburnriverside98ea0e1f2a7f0720App_Code.lbdcba1v.2.cs Line: 1240 Stack Trace:
[Code]....
I have stumbled into a problem in which Im having a hard time solving. I have a linq data setup(based on a mssql) where a Purchase Order contains a number Equipments - each equipment has a price. I have a gridview that shows the summed price of the equipments that are included in a Purchase Order. This sum is currently being calculated on RowDataBound through a "listOfEq.Sum(Eq => Eq.PurchaseOrderPrice);" expression which works without any problems. My problem is that I want to be able to sort the gridview based on this summed value, which I cannot do with a normal sortexpression. My next thought was to create a function in my database to calculate the sum instead and then use this is my data basis for the summed column. I have created a function like this:
[Code]....
I want to create a sortable column based on this data. My thought is something like this:
[Code]....
Displaying the correct information is not a problem, however creating the sorting is. Im not sure what to put in the SortExpression. Anybody got an idea of what to do? Perhaps I am forced to use a computed column for this however I dont know to create this column when its based on another table. If this is the case, any idea about how to do create a computed column thats based on data from another table?
I'm trying to define a computed column that will contain an auto-incremented number. In other words, I want it to work exactly like identity, but since I can have only one identity column per table, I wanted to make a computed column that reads its latest value and increment it by 1.
View 5 RepliesHow do add read-only computed column in LinqToSql designer (dbml)? My existing table structure:
Name: ID, Type: int, AutoGenerate: true, AutoSync: OnInsert, PrimaryKey:
true, ServerDataType: int not null identity, Source: IDName: Name, Type: string, ServerDataType: nvarchar(100) not null, Source:
NameName: Value, Type: byte[], ServerDataType: VarBinary(max), Source:
Value, UpdateCheck: Never
I want add the 4th colum name: Name: HasValue, Type: bool --> [Value] != null
How do i generate another computed column that will contail the result of GrandTotal/Total,
where GrandTotal is another value comes from computed column and the Total would be the sum of the Total within SchedularID.
And thats what i have done so far: [Code]....
I am creating dynamic view using two tables.one is emp_Tbl and 2nd table emp_salary which is created dynamically .creating view it gives error 'Create View or Function failed because no column name was specified for column 2.
my code is: create view [dbo].[Emp_Salary_pay] as select dbo.Emp_Tbl.Emp_Status, (select column_name + ', ' from information_schema.columns where table_name = 'Emp_salary' ) FROM dbo.Emp_Tbl INNER JOIN dbo.Emp_Salary ON dbo.Emp_Tbl.Emp_Id = dbo.Emp_Salary.Pay_Emp_Id
Heres the situation: I need update a column from my table (T1) from two other columns in a different table (T2).
My constraints are:
That I have to match the first 4 letters of a column in T2 to one column in T1 I have to identify that the first letter in a column in T1 corresponds to one letter in the middle of a string in a column in T2 For instance:
My Table (T1):
Order Type Combined
Place
0090 0001 YYXX 1YY
0091 1001 YYXX YYY
0092 1002 XXXX 2XX
Table 2 (T2):
Order Value
00900001YY XX
00911001YY XX
00921002XX XX
The Combined column in T1 is what i'm trying to complete. The T1.Place column contains the first character that I want to check for.
If it's a "1" then I want to make sure the 5th letter in T2.Order is a "0" If its a "Y" then I want to look for a "1001" If its a "2" then I want to make sure the 8th letter is a "2" in T2.Order
If all that matches then I was the last two letters in T2.Order + T2.Value to be combined and put into the appropiate spot in T1.Combined
Here's what I have:
[Code]....
I know it's a little complex, but i'm really stuck on it and any help would be greatly appreciated.
I create a table as picture below :
when I insert any character to column Name then A new string random will auto insert into column Random (picture below) I had used Trigger but It was error !
I want to column Random use to code :
DECLARE @myid uniqueidentifier
SET @myid = NEWID()
insert into table_1 values(@myid, substring(CONVERT(varchar(255), @myid), 1, 5))
but It must auto like column Number (column Number is Identity)
I have string value in the column of datatable.I would like to assign seq no to different value.if they have the same value, I would like to assign the same seq no.if there isn't has the value in the column, then assign a new seq no.how to do this?for example:
district no. district
1 hong kong
2 germary
3 canada
1 hong kong
I hve two textboxes named TxtRelinquished,txtDevAreaAcrg.On form load in txtDevAreaAcrg suppose 100 is dere.& TxtRelinquished is empty.
Now the user runs the form,suppose in TxtRelinquished types 2,den i want in txtDevAreaAcrg = 98 is dere(txtDevAreaAcrg -TxtRelinquished).
Now suppose the user types 0 after 2,its 20 den in txtDevAreaAcrg = 78 is dere.
But I want dat in txtDevAreaAcrg 80 is to there according to the formula.How to do that??I think so Keyup event is not the right way to use i my case!Code:
function GetAcreage_Amt()
{
var _TxtRelinquished = document.getElementById('<%= TxtRelinquished.ClientID %>');
[code]....
I have a table with three fileds userID, userName, userPassword.I have 100 rows in that table, now I want to update the userPassword column with new random generated string password.
View 1 Repliesi have a dataset and a table into named Students. Students(StudentName, age)
i wanna name colunm to string array. but not use loops (for foreach..). is there any way?
string[] array = this.dataSetZLC.Student.StudentNameColumn..
Any open source javascript mathematical formula editor to recommend? I want to add mathematical formula editor to my web site, so that when people submit message using text box, they can insert related mathematical formula.
BTW: I am using VSTS 2010 + C# + .Net 4.0 + ASP.Net + IIS 7.0, any such controls provided by MSFT?
i am now think of how to get all the output for all the combination
eg.
given : 1234
output = 1234,1243,2143......and so on.....all 24 possible output
if given : 123
output = all 12 output
if given 12345 , all 120 output...
can someone provide me the algorithm or formula for that ?
I am currently using this formula to convert an IP address to a number, however I do not get the correct results.
[Code]....
'Dim arrDec() As String
I am new to .net having come from a PHP background.I'm making a small website at the moment in .NET. On one page I have a form with a few fields:
1st value (let's call it A)
2nd value (let's call it B)
3rd value (let's call it C)
4th value (let's call it D)
When the user clicks the submit button, it needs to work out the formula:
(A*4)+(B*3)+(C*4)+D+15
What is the easiest way to achieve this in .NET? Is it best to use a 'code-behind' model and have the calculations done on another page then displayed on the next webpage?
I'm loading data from my database into a DataTable, and one of the columns is a date field.
[Code]....
I'd like to format that column so that instead of containing a full date, it will be formatted like "MM/DD/YYYY".
I've tried looping through each row in the table and changing the cell for that column, but I get an error saying that the string isn't a valid DateTime object.
I tried changing the column DateType to a string, but I get an error saying I can't change the DateType after the table is filled.
How can I do this? This seems like such a simple thing, but I'm having so much trouble with it.
in my project iam providing users to send sms acrooss india..in admin panel the admin have a feature to check the usersent sms details on the basis of userid.. when admin selects the userid then corresponding send sms details are details are displaying.. my requirement is generating the crystal report for that table..the users are displaying from one table and sent sms details are displaying detaials from another table.. how to generatye crystal report for that..and how to give formula fields in crystal reports
View 1 Replies
