VS/C# Autogenerate Named Arguments when calling a method - c#

Visual Studio (C#) has the concept of Named Arguments. Is there a way, without a 3rd party plug-in to auto-generate the parameter list when calling the method? (I'm looking to save a bunch of typing by having the list of param: [value], //type auto-generated via a keyboard shortcut/chord.) This would be akin to what the SSMS / RedGate intellisense does.
For example in SSMS:
EXEC dbo.ContactInfo_Get
#pk_ContactInfo = 0 -- int <---THIS IS WHAT I MEAN
For example in VS / C#
MyClass.UpdateMethod(
param1: 0, //int
param2: "" //string
);
I realize that intellisense will show me the parameters, but I'm looking to have a kind of template list of the named argument parameters magically appear to save typing all the named arguments by hand. For example, start typing the method's name, get to the param list, tab+tab (or some other shortcut magic), have a named argument parameter list show up that I can then update the values for/adjust as needed.
If there isn't a naive VS / intellisense way to do this, can anyone suggest an inexpensive or free plug-in?
Thanks!

It works in VS2022.
step - write method name and hit tab (this will generate all default values for all parameters)
step - Hit CTRL + '.' and select "Add argument name"
result

Related

Is There A Way To Show An Enum's Numerical Value In Visual Studio With Resharper?

I always wind up adding comments next to enum values so I can see their numerical value quickly in the editor. Otherwise you have to start at 0 (or your initial value) and count up from there (or worse if you want to use flags). My use case is looking at the enum in the editor while working with SSMS.
enum PossibleValues
{
AnOption, //0
ADifferentOption, //1
TheLastOption, //2
}
This seems like a feature Visual Studio might have but I can't find it. Maybe a plugin is necessary? Google is failing me here.
Edit: I've added the Resharper tag and specified it in the title. Since it's available to me and offers a perfect solution.
You mentioned in the comments that you're using ReSharper - it has the functionality to quickly add in the values if you haven't already assigned them. Select the enum name, and bring up the usual menu (alt-enter by default):
Choose "Specify enum member values", and it will populate them directly in code:
If you click the small arrow, you can also do it per file, folder, project or the entire solution.
if I'm writing a one-off SQL Query in SSMS I would need to know the number as SQL Server isn't aware of the Enum in C#.
This means the enum values NEED to stay constant, you do not want someone to put in another value in between your current ones and blow up your DB entries.
In such case you should do
enum PossibleValues
{
AnOption = 0,
ADifferentOption = 1,
TheLastOption = 2
}
You can assign values
enum ee { one = 1, two = 2, three = 3 }
You can cast the enum to int. That is what I use for building TSQL in code.
ee e = ee.three;
Debug.WriteLine((int)e);
In SQL I will typically have a table with enum number and value so I can look it up there and present the actual enum in the query. You need to manually synch them.

Crystal Reports in VS2010: Prompted Parameter value in Design Time

I have a crystal report and in design time on VS2010 I apply a parameter field via the [Database Expert][Add cmd][create parameter] wizard. But this prompts me for a specific value for my new parameter. I don't see why it should as its going to be dynamic!
In my c# code, my solution only works if the dynamic value at run time matches the design-time prompted value. This seems to defeat the purpose.
In my run-time code I have:
crystalReport.SetParameterValue("TenantID", tenantID);
TenanID is the CR parameter in design time
tenanID is the picked up dynamic value
Can't i make this truly dynamic?
Use:
crystalReport.ParameterFields(1).AddCurrentValue (num)
where "num" is your parameter value

The variable name '#' has already been declared

Part of our solution is a page that displays company-specific information using an ASP Gridview. Our method of constructing the SQL that feeds the Gridview is by using C# to build a custom SELECT statement based on a series of user inputs.
Once the user applies their filters through a button click, C# loops through all of their selections (check boxes and text boxes) and then propagates those selections to a separate method which constructs a WHERE clause to append to a simple SELECT statement. We use a Table-Valued Function in the FROM statement, and the only input parameter is from the Querystring and this does not change throughout the process.
Once the query has been assembled using C#, we apply this query to the SqlDataSource as the Select Command. However, we have recently discovered a very bizarre SQL error that we haven’t seen before:
Errors :
"The variable name '#' has already been declared.
Variable names must be unique within a query batch or stored procedure."
We aren’t declaring any variables in our SQL. As stated above, the only input parameter comes from the Querystring, and we access this parameter using both QueryStringParameters in the ASP:SqlDataSource on the ASP side and “int.Parse(Request.QueryString["id"]).ToString()” on the C# side while constructing the SQL query.
After researching this error, I have yet to find an instance where the variable declaration is empty. Most people are getting errors similar to this when they have declared a variable such as '#email' or '#address' twice. We have no double declarations, and the fact that the variable in the error is not defined is causing a massive headache.
Has anyone seen anything like this before or have any suggestions on how to further debug?
I'll post some code if need be, but we are mostly interested to see if anyone has seen an error like this before.
Code:
string MainQueryStr = ResultsPages.SearchString(SearchVariables(), Request,
ProjectsSqlds, 0, "SELECT DISTINCT dbo.{0}.* FROM dbo.{0}(" + int.Parse(Request.QueryString["id"]).ToString() + ")",
"getXyzById", "AbcId");
StringBuilder SearchQueryStr = new StringBuilder();
SearchQueryStr.Append(MainQueryStr);
SearchQueryStr.Append(" ORDER BY AbcName");
ProjectsSqlds.SelectCommand = SearchQueryStr.ToString();
The search string function is a 500 line method that we can't post right now. It is used all over our solution and works as it should. It stitches together strings to create the query.
This is how the SearchString function appends the parameters:
l.Add(ResultsPages.NewSearchQueryString(ABCFiltersTxBx, SearchQueryStringVariableType.String,
"{1}.AbcID IN (" + ABCFiltersTxBx.Text + ")"));
Where the ABCFiltersTxBx is parsed into a comma separated string.
I should chime in as the supervisor in question here:
OK, so we figured out what was happening.
What we didn't realize was that the SQLDataSource was taking our appended WHERE clauses and using them as SelectParameters. Each parameter we wanted to add to the query that would ultimately feed the SQLDS was then being added as a SelectParameter without us realizing it, and because we hadn't made any explicit parameter declarations, the parameters were added with just "" as the name, leading to the error of "'#' has already been declared".
The most embarrassing part of this whole thing is that our API has already accounted for Parameter Names, but we had unwittingly excluded this part. Thank you all very much for reading and attempting to help. We thoroughly appreciate you taking your time to help us brainstorm our solution over here.
So I suppose the take-home of this whole error is in 2 parts:
Know your API. When you realize that you screwed it up on your own, graciously thank those that took the time to help you here on StackOverflow (or wherever you seek help), as their time is valuable as well.
"'#' is already declared" would indicate that you have parameters being declared without a name, so when debugging, look through the SQLDS you are using and find any parameters that haven't been explicitly named.
Again, thank you to all who read and offered to help. It's greatly appreciated.

SQL column true or false - use a view?

Simple question, I have an application and dependant on whether you are in the administration system or on the public website I want to show different results.
Example: in the database for a news story in the administration I may set the column value 'showonsite' to false. So I would like this to show in the administration panel only and not on the live site.
My question is, because I require the same information just with the only one column change, live site to only show true values and administration to show both. What is the most effective way of achieving this without copy paste of code?
Thanks
Please see the second query.
I may be missing something. For non-adminstrative users, could you simply not SELECT news stories with the showonsite column set to false?
For example:
SELECT
*
FROM
dbo.NewsStory
WHERE
showOnSite = 1
Edit:
Oh! I see. You're talking about copying and pasting the query. It's late. >.<
If you have a stored procedure, you can pass a value to indicate whether the given user is an administrator:
SELECT
*
FROM
dbo.NewsStory
WHERE
showOnSite = 1
OR #isAdmin = 1
Depends on where you write your code - if you use stored procedures, then just a parameter like #liveonly should be sufficient. Sameway if you use an inline sql query directly in a C# method, then a parameter live_only should be good enough, to determine whether the extra where condition will be added or not.
For eg. in the SP
SELECT *
FROM news
WHERE ((#live_only=true AND showonsite=true) or (#live_only=false))
This way it can be called with #live_only = false for admin panel, but with value true for the actual site.
No, I wouldn't use a view for that, an I wouldn't copy any code. It sounds like this is just a conditional filter on your queries.
You don't make it clear how you are doing the data-access, but this might mean aasdij an extra line of TSQL, adding adding a so parameter, adding an extra LINQ .Where clause, etc

Assign multiple values to a parameter in Crystal Reports

I have added a parameter to my report with the option "Allow Multiple Values" checked.
This is a status column (IE, Proposed, In Progress, Completed, Canceled), and I want the user to be able to select which (and how many) different OrderStatus to report on.
How I normally set parameters is:
report.SetParameterValue("#dtBegin", dtBegin.DateTime);
What I tried to do for the multiple values was something like this:
//pseudo loop
foreach(int intOrderStatus in intSelectedOrderStatuses)
{
report.Parameter_OrderStatus.CurrentValues.AddValue(intOrderStatus);
}
I have checked it does add the values to the OrderStatus parameter, but when the report runs, the CrystalReports dialog pops up and asks me to enter values for the OrderStatus parameter. So it seems as though the values aren't "commited" to the parameter. I have done a number of searches and can't figure out why it's not working.
Thanks,
Just set the parameter value with an array of ints.
report.SetParameterValue("#OrderStatus", new int[]{1,2,3});
in the select expert you would use the in operator.
{table.order_status_id} in {?#OrderStatus}
What you can do is, make a normal parameter field,i.e without multiple values, only discreet values true, all you need to pass is 1,2,3,4. "," is the delimiter for separation use what ever you think works for you, then in record selection formula simply put
{table.order_status_id} in split({#OrderStatus}, ",")
all you need to pass from you page is the string 1,2,3,4 and it should work
Have you set the parameter to Hidden in the Crystal Reports parameter options?
I haven't tried this, but I think that you should be able to add intOrderStatus to either a ParameterDiscreteValue or ParameterRangeValue and pass that into Parameter_OrderStatus.CurrentValues instead of intOrderStatus.
Well i have same issue. The work around is very simple. Don't add data source after parameters. e.g
report.SetParameterValue("#dtBegin", dtBegin.DateTime);
report.SetParameterValue("#dtBegin2", dtBegin.DateTime1);
//Note datasource is assigned after parameters
report.SetDatasource(dataset);
The crystal report will refresh parameters before applying data source to report.
The below is the not popup discrete dialog box
//Note Datasource is applied before parameters
report.SetDatasource(dataset);
report.SetParameterValue("#dtBegin", dtBegin.DateTime);
report.SetParameterValue("#dtBegin2", dtBegin.DateTime1);
Following is tested in Crystal Reports version 13.0.20:
1) In Parameter Fields section add new parameter as follow:
Name: ParamMultipleOrderStatus
Type: Number
Value Options:
Allow multiple values: true
2) Choose the Select Expert Record ... in Crystal Reports and code may like this (use = operator):
{Orders.OrderStatus} = {?ParamMultipleOrderStatus}
3) Use following code:
foreach (int intOrderStatus in intSelectedOrderStatuses)
{
report.ParameterFields["ParamMultipleOrderStatus"].CurrentValues.AddValue(intOrderStatus);
}

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