Hi I am using Visual Studio 2013, c# asp.net. I have created a online docket for staff to fill out, I was wondering can you add a reference number/ issue number to the web form. Each staff member will fill out this form and they could be similar, so I want each form to have there own unique number however I am not to sure which way to go about it. The form is going to be the same for everyone so I want each one that is filled out to have a different number. Should I place a label and have an array list to generate random numbers or is there a more straight forward way?
An alternative to keeping a number in the database and having to detect collisions etc you could use the Guid: Guid.NewGuid()
Sample usage:
Guid uniqueId = System.Guid.NewGuid();
string x = uniqueId.ToString();
Keep a number in a database. On each form generated, take this number, increment it, and save the new number to the DB.
Related
I am writing a report in C# that will generate an SQL statement to call data in SAP. In SAP ABAP, there is a command "SELECT-OPTIONS" which will automatically place on a screen a field which automatically has a number of different options to input data. For example, if you wanted to query a customer master database, you could enter a single customer number, multiple customer numbers, multiple ranges of customer numbers. Set criteria to include the customer numbers, exclude them, etc.
It is really nice functionality that users are asking me to duplicate but with a C# front end.
I am trying to replicate this a portion of this functionality by using lookup buttons, datagridviews, internal lists, etc.
I was wondering if anyone has done anything similar or if there is a customer class that already exists that does the equivalent.
You probably need to understand SAP ABAP and C# to fully understand the question as it is hard to explain without having to show a lot pictures and using a lot of words.
Thanks
Stephen
Most likely there is no generic finished product that will do it. In ABAP, this relies on the fact that select-options is bound to a variable, data element and domain, which, in turn, has either a valid-values-list (fix or via table) and/or various search helps. So if you need to enter an employee number, you will be able to select the number by name or by email or by department or other criteria. So basically, for each “type of object” that you want to enter there is some sort of input help that has intrinsic knowledge of entered data.
If you are only interested in an “input field” that is able to select an arbitrary number of following inputs at the same time (without value help dialogs)
include/exclude single values
include/exclude range (for sortable values) (42-50 or Bob-Mike)
include/exclude open ranges (>= 42)
include/exclude values by pattern (ash*)
Then: I never saw anything like that in any UI other than SAPs DynPro or WebDynpro.
In the end, you end up with a so-called range table, which has four values per line:
include/exclude
operation (equals, not equals, less than, between, etc)
value1
value2 (only relevant for operations like “between”)
So if you build a UI for that, the user will need to enter something which will end up in this construct.
Try ERPConnect from Theobald Software:
https://theobald-software.com/en/erpconnect/
I didn't find a mention of SELECT-OPTION control in the brochures but they claim they have .Net API for core SAP/ABAP tools and interfaces, so you can give a try.
I have a table and it has one of the attribute set as identity. I want to get the value of the identity attribute that would be generated after I enter a value to the database.
I have EmpTable made of EmpID and EmpName. EmpID is set as Identity. I want to fetch the EmpID value before inserting a new row to the database.
I would advise against trying to do this with a table that is set up to use an integer column as the primary key. You will run into concurrency problems if you simply fetch the previous ID and increment it. Instead you should use a GUID (uniqueidentifier in SQL) as your primary key.
This will allow you to generate a new GUID in your code that can safely be saved to the database at a later stage.
http://msdn.microsoft.com/en-us/library/system.guid.newguid.aspx
http://msdn.microsoft.com/en-us/library/ms187942.aspx
Sure the server knows where the auto-increment count is in its sequence, but there is almost nothing useful you can do with that information. Imagine you go to the Post Office and they hand out numbered tickets so they can serve customers in order. Of course you could ask them what the next number they'll give out is, but since anyone can walk in at any time you don't know you'll get that number. If you don't know that you'll get it, you can't do anything with it - e.g. writing it as a reference number on a form would be a mistake.
Depending on what you're trying to do, your two main options are:
Use a client-generated guid as your identifier. This kind of messes up the order so the analogy isn't great, but imagine if each customer who walked in could generate a random number that they are sure would never have been used before. They could use that to fill out forms before taking a number.
Take a number, but do it in a transaction with the other operations. A customer can take a number and use it to fill out some paperwork. If they realize they left their money at home, they just throw everything away and you never call their number.
Why do you think you need this information? Can you use either of these strategies instead?
I am using Quality Center's OTA API in C# and I need to get the items from the dropdowns in QC to a SQL database. Some lists weren't long so I did them manually but the [BG_PROJECT] list has a lot of items so I really don't want to do it manually. How would this be done?
On TDConnection object you have Customization property.
On it you have Customization Listening.
CustomizationLIsts allows access to all the lists defined in the project.
You can see exact api in documentation.
Dropdown list values are stored in the Customization.Lists object.
I don't know C# but I'd do it like this in VBA:
QCC As TDConnection
myList As CustomizationList
I As Integer
Initialise QCC object and connect to domain and project then:
Set myList = QCC.Customization.Lists.List("NameOfList")
For I = 1 To myList.RootNode.Children.Count
MsgBox(myList.RootNode.Children.Item(I).Name)
Next I
(Btw, I wouldn't really use MsgBox() to display each value of the list, I used it here to demonstrate my general approach).
Let's say we have a code list of all the countries including their country codes. The country code is primary key of the Countries table and it is used as a foreign key in many places in the database. In my application the countries are usually displayed as dropdowns on multiple forms.
Some of the countries, that used to exists in the past, don't exist any more, for example Serbia and Montenegro, which had the country code of SCG.
I have two objectives:
don't allow the user to use these old values (so these values should not be visible in dropdowns when inserting data)
the user should still be able to (readonly) open old stuff and in this case the deprecated values should be visible in dropdowns.
I see two options:
Rename deprecated values, for instance from 'CountryName' to '!!!!!CountryName'. This approach is the easiest to implement, but with obvious drawbacks.
Add IsActive column to Countries table and set it to false for all deprecated values and true for all other. On all the forms where the user can insert data, display only values which are active. On the readonly forms we can display all values (including deprecated ones) so the user will be able to display old data. But on some of my forms the user should be able to also edit data, which means that the deprecated values should be hidden from him. That means, that each dropbox should have some initialization logic like this: if the data displayed is readonly, then include deprecated values in dropbox and if the data is for edit also, then exclude them. But this is a lot of work and error prone too.
And other ideas?
I deal with this scenario a lot, and use the 'Active' flag to solve the problem, much as you described. When I populate a drop-down list with values, I only load 'active' data and include upto 1 deprecated value, but only if it is being used. (i.e. if I am looking at a person record, and that person has a deprecated country, then that country would be included in the Drop-downlist along with the active countries. I do this in read-only AND in edit modes, because in my cases, if a person record (for example) has a deprecated country listed, they can continue to use it, but once they change it to a non-deprecated country, and then save it, they can never switch back (your use case may vary).
So the key differences is, even in read-only mode I don't add all the deprecated countries to the DDL, just the deprecated country that applies to the record I am looking at, and even then, it is only if that record was already in use.
Here is an example of the logic I use when loading the drop down list:
protected void LoadSourceDropdownList(bool AddingNewRecord, int ExistingCode)
{
using (Entities db = new Entities())
{
if (AddingNewRecord) // when we are adding a new record, only show 'active' items in the drop-downlist.
ddlSource.DataSource = (from q in db.zLeadSources where (q.Active == true) select q);
else // for existing records, show all active items AND the current value.
ddlSource.DataSource = (from q in db.zLeadSources where ((q.Active == true) || (q.Code == ExistingCode)) select q);
ddlSource.DataValueField = "Code";
ddlSource.DataTextField = "Description";
ddlSource.DataBind();
ddlSource.Items.Insert(0, "--Select--");
ddlSource.Items[0].Value = "0";
}
}
If you are displaying the record as read-only, why bother loading the standing data at all?
Here's what I would do:
the record will contain the country code in any case, I would also propose returning the country description (which admittedly makes things less efficient), but when the user loads "old stuff", the business service recognises that this record will be read only, and you don't bother loading the country list (which would make things more efficient).
in my presentation service I will then generally do a check to see whether the list of countries is null. If not (r/w) load the data into the list box, if so (r/o) populate the list box from the data in the record - a single entry in the list equals read-only.
You can filter with CollectionViewSource or you could just create a Public Enumerable that filters the full list using LINQ.
CollectionViewSource Class
LINQ The FieldDef.DispSearch is the active condition. IEnumerable is a little better performance than List.
public IEnumerable<FieldDefApplied> FieldDefsAppliedSearch
{
get
{
return fieldDefsApplied.Where(df => df.FieldDef.DispSearch).OrderBy(df => df.FieldDef.DispName);
}
}
Why would you still want to display (for instance) customer-addresses with their OLD country-code?
If I understand correctly, you currently still have 'address'-records that still point to 'Serbia and Montenegro'. I think if you solve that problem, your current question would be none-existent.
The term "country" is perhaps a little misleading: not all the "countries" in ISO 3166 are actually independent. Rather, many of them are geographically separate territories that are legally portions or dependencies of other countries.
Also note that 'withdrawn country-codes' are reserved for 5 years, meaning that after 5 years they may be reused. So moving away from using the country-code itself as primary key would make sense to me, especially if for historical reasons you would need to back-track previous country-codes.
So why not make the 'withdrawn' field/table that points to the new country-id's. You can still check (in sql for instance, since you were already using a table) if this field is empty or not to get a true/false check if you need it.
The way I see it: "Country" codes may change, country's may merge and country's may divide.
If country's change or merge, you can update your address-records with a simple query.
If country's divide, you need a way to determine what address is part of what country.
You could use some automated system do do this (and write lengthly books about it).
OR
(when it is a forum like site), you could ask the users that still have a withdrawn country that points to multiple alternatives in their account to update their country-entry at login, where they can only choose from the list of new country's that are specified in the withdrawn field.
Think of this simplified country-table setup:
id cc cn withdrawn
1 DE Germany
2 CS Serbia and Montenegro 6,7
3 RH Southern Rhodesia 5
4 NL The Netherlands
5 ZW Zimbabwe
6 RS Serbia
7 ME Montenegro
In this example, address-records with country-id 3, get updated with a query to country-id 5, no user interaction (or other solution) needed.
But address-records that specify country-id 2 will be asked to select country-id 6 or 7 (of course in the text presented to the user you use the country-name) or are selected to perform your custom automated update routine on.
Also note: 'withdrawn' is a repeating group and as such you could/should make it into a separate table.
Implementing this idea (without downtime) in your scenario:
sql statement to build a new country-table with numerical id's as primary key.
sql statement to update address-records with new field 'country-id' and fill this field with the country-id from the new country-table that corresponds with country-code specified in that record's address-field.
(sql statement to) create the withdrawn table and populate the correct data with in it.
then rewrite your the sql statements that supply your forms with data
add the check and 'ask user to update country'-routine
let new forms go live
wait/see for unintended bugs
delete old country-table and (now unused) country-code column from the "address"-table
I am very curious what other experts think about this idea!!
I am new at C# and InfoPath. Using SharePoint 2007 and InfoPath 2007. I have an InfoPath form that I want to read values from a list but I want to read a value based on column name and row # so in C# code this would be a 2 dimensional array or List<>. Is it possible to read from a SharePoint list without writing c# code (workflow) to access the values in the list?
7/25/11: I couldn't comment or reply so am editing my original post instead:
#Andreas Thank you for your idea.
Your suggestion is not exactly what I want to do although I am doing the tutorials from msdn that you recommended. Most of it is review for me but I am also learning some new tricks (i.e. certificate signing). Anyway, I have a list in SharePoint that is a per diem rate chart for travelers. I am trying to figure out a way to pick the correct rate, based on days of travel and destination zip code. The SharePoint list column name are rate values like $46, $51, $76 and the rows are breakfast, lunch, dinner incidentals, "first or last day of travel".
If rate = $46 and days of travel are > zero and < 3, (i.e. 2 days total) then "first and last day of travel" per diem applies.
My dilema is how do I read the value (rate) for "first and last day of travel" if column is $46. This would be a 2 dimensional array or list, right? Can I read the value with IP rules or do I need to write custom code to read from the list?
From what I've understood, you want to create a connection to a SharePoint list/library and display it's contents in an InfoPath Form in a 2 dimensional way => Table, am i right?
If so, this two links might help you out.
http://office.microsoft.com/en-us/infopath-help/add-a-data-connection-to-a-sharepoint-document-library-or-list-HP010093160.aspx
http://msdn.microsoft.com/en-us/library/bb267335(v=office.12).aspx