Cannot Implicitly convert type 'System.collections.generic.IEnumerable'to'string'
I hava a class and controller as below
//class
public class Payment
{
public Guid ID { get; set; }
public string InvoiceNumber { get; set; }
public string ContactNumber { get; set; }
public string ConsumerName { get; set; }
}
//controller
public class TransPaymentController : Controller
{
public ActionResult Searching(int? page,string searchInvoiceNumber)
{
//Page Setting
int pageSize = 10;
int pageNumber = (page ?? 1);
IPagedList<Payment> payments = null;
payments= paymentRepo.GetList_Payments_InTableManualPayment(pageSize, pageNumber);
if (!String.IsNullOrEmpty(searchInvoiceNumber))
{
string data = payments.Where(s => s.InvoiceNumber.Contains(searchInvoiceNumber)); //the error is here
}
return null;
}
}
and I get an error as below.
Cannot Implicitly convert type System.collections.generic.IEnumerable<Project.Dto.PaymentDto> to string
why am I getting this error?
c# asp.net-mvc
edited Jan 21 at 7:46
ArunPratap
2,0162826
asked Jan 20 at 13:58
mithmith
1
add a comment |
I hava a class and controller as below
//class
public class Payment
{
public Guid ID { get; set; }
public string InvoiceNumber { get; set; }
public string ContactNumber { get; set; }
public string ConsumerName { get; set; }
}
//controller
public class TransPaymentController : Controller
{
public ActionResult Searching(int? page,string searchInvoiceNumber)
{
//Page Setting
int pageSize = 10;
int pageNumber = (page ?? 1);
IPagedList<Payment> payments = null;
payments= paymentRepo.GetList_Payments_InTableManualPayment(pageSize, pageNumber);
if (!String.IsNullOrEmpty(searchInvoiceNumber))
{
string data = payments.Where(s => s.InvoiceNumber.Contains(searchInvoiceNumber)); //the error is here
}
return null;
}
}
and I get an error as below.
Cannot Implicitly convert type System.collections.generic.IEnumerable<Project.Dto.PaymentDto> to string
why am I getting this error?
c# asp.net-mvc
edited Jan 21 at 7:46
ArunPratap
2,0162826
asked Jan 20 at 13:58
mithmith
1
4
you declareddataasstring. TheWheredoes not return a string. What are you actually trying to get? This may be an XY problem.
– Nkosi
Jan 20 at 14:01
As @Nkosi mentioned,Wherewould return anIEnumerablein your case. You can convert/project the source data type to target by using a projection likeSelectorAggregate(Aggregate can join each item into a single string, and also there is an example on doing that in the documentation docs.microsoft.com/en-us/dotnet/api/…) methods defined in LINQ.
– Deniz
Jan 20 at 14:18
1
If you replacestring databyvar datayour error should disappear. But as the previous comments stated, it is unclear what you are trying to achieve here.
– Sergioet
Jan 20 at 16:01
@Nkosi Even if this is an XY problem, the Y in this case is fairly fundamental to any prospective solutions to X.
– Khyron
Jan 21 at 4:21
With basic understanding of the C# language it should be obvious why you get the error. So I'm voting unclear what you are asking, as explaining why will likely not solve your problem.
– nvoigt
Jan 21 at 8:30
add a comment |
I hava a class and controller as below
//class
public class Payment
{
public Guid ID { get; set; }
public string InvoiceNumber { get; set; }
public string ContactNumber { get; set; }
public string ConsumerName { get; set; }
}
//controller
public class TransPaymentController : Controller
{
public ActionResult Searching(int? page,string searchInvoiceNumber)
{
//Page Setting
int pageSize = 10;
int pageNumber = (page ?? 1);
IPagedList<Payment> payments = null;
payments= paymentRepo.GetList_Payments_InTableManualPayment(pageSize, pageNumber);
if (!String.IsNullOrEmpty(searchInvoiceNumber))
{
string data = payments.Where(s => s.InvoiceNumber.Contains(searchInvoiceNumber)); //the error is here
}
return null;
}
}
and I get an error as below.
Cannot Implicitly convert type System.collections.generic.IEnumerable<Project.Dto.PaymentDto> to string
why am I getting this error?
c# asp.net-mvc
edited Jan 21 at 7:46
ArunPratap
2,0162826
asked Jan 20 at 13:58
mithmith
1
I hava a class and controller as below
//class
public class Payment
{
public Guid ID { get; set; }
public string InvoiceNumber { get; set; }
public string ContactNumber { get; set; }
public string ConsumerName { get; set; }
}
//controller
public class TransPaymentController : Controller
{
public ActionResult Searching(int? page,string searchInvoiceNumber)
{
//Page Setting
int pageSize = 10;
int pageNumber = (page ?? 1);
IPagedList<Payment> payments = null;
payments= paymentRepo.GetList_Payments_InTableManualPayment(pageSize, pageNumber);
if (!String.IsNullOrEmpty(searchInvoiceNumber))
{
string data = payments.Where(s => s.InvoiceNumber.Contains(searchInvoiceNumber)); //the error is here
}
return null;
}
}
and I get an error as below.
Cannot Implicitly convert type System.collections.generic.IEnumerable<Project.Dto.PaymentDto> to string
why am I getting this error?
c# asp.net-mvc
c# asp.net-mvc
edited Jan 21 at 7:46
ArunPratap
2,0162826
asked Jan 20 at 13:58
mithmith
1
edited Jan 21 at 7:46
ArunPratap
2,0162826
asked Jan 20 at 13:58
mithmith
1
edited Jan 21 at 7:46
ArunPratap
2,0162826
edited Jan 21 at 7:46
ArunPratap
2,0162826
edited Jan 21 at 7:46
ArunPratap
2,0162826
2,0162826
asked Jan 20 at 13:58
mithmith
1
asked Jan 20 at 13:58
mithmith
1
asked Jan 20 at 13:58
mithmith
1
1
4
you declareddataasstring. TheWheredoes not return a string. What are you actually trying to get? This may be an XY problem.
– Nkosi
Jan 20 at 14:01
As @Nkosi mentioned,Wherewould return anIEnumerablein your case. You can convert/project the source data type to target by using a projection likeSelectorAggregate(Aggregate can join each item into a single string, and also there is an example on doing that in the documentation docs.microsoft.com/en-us/dotnet/api/…) methods defined in LINQ.
– Deniz
Jan 20 at 14:18
1
If you replacestring databyvar datayour error should disappear. But as the previous comments stated, it is unclear what you are trying to achieve here.
– Sergioet
Jan 20 at 16:01
@Nkosi Even if this is an XY problem, the Y in this case is fairly fundamental to any prospective solutions to X.
– Khyron
Jan 21 at 4:21
With basic understanding of the C# language it should be obvious why you get the error. So I'm voting unclear what you are asking, as explaining why will likely not solve your problem.
– nvoigt
Jan 21 at 8:30
add a comment |
4
you declareddataasstring. TheWheredoes not return a string. What are you actually trying to get? This may be an XY problem.
– Nkosi
Jan 20 at 14:01
As @Nkosi mentioned,Wherewould return anIEnumerablein your case. You can convert/project the source data type to target by using a projection likeSelectorAggregate(Aggregate can join each item into a single string, and also there is an example on doing that in the documentation docs.microsoft.com/en-us/dotnet/api/…) methods defined in LINQ.
– Deniz
Jan 20 at 14:18
1
If you replacestring databyvar datayour error should disappear. But as the previous comments stated, it is unclear what you are trying to achieve here.
– Sergioet
Jan 20 at 16:01
@Nkosi Even if this is an XY problem, the Y in this case is fairly fundamental to any prospective solutions to X.
– Khyron
Jan 21 at 4:21
With basic understanding of the C# language it should be obvious why you get the error. So I'm voting unclear what you are asking, as explaining why will likely not solve your problem.
– nvoigt
Jan 21 at 8:30
4
4
you declared
data as string. The Where does not return a string. What are you actually trying to get? This may be an XY problem.– Nkosi
Jan 20 at 14:01
you declared
data as string. The Where does not return a string. What are you actually trying to get? This may be an XY problem.– Nkosi
Jan 20 at 14:01
As @Nkosi mentioned,
Where would return an IEnumerable in your case. You can convert/project the source data type to target by using a projection like Select or Aggregate (Aggregate can join each item into a single string, and also there is an example on doing that in the documentation docs.microsoft.com/en-us/dotnet/api/…) methods defined in LINQ.– Deniz
Jan 20 at 14:18
As @Nkosi mentioned,
Where would return an IEnumerable in your case. You can convert/project the source data type to target by using a projection like Select or Aggregate (Aggregate can join each item into a single string, and also there is an example on doing that in the documentation docs.microsoft.com/en-us/dotnet/api/…) methods defined in LINQ.– Deniz
Jan 20 at 14:18
1
1
If you replace
string data by var data your error should disappear. But as the previous comments stated, it is unclear what you are trying to achieve here.– Sergioet
Jan 20 at 16:01
If you replace
string data by var data your error should disappear. But as the previous comments stated, it is unclear what you are trying to achieve here.– Sergioet
Jan 20 at 16:01
@Nkosi Even if this is an XY problem, the Y in this case is fairly fundamental to any prospective solutions to X.
– Khyron
Jan 21 at 4:21
@Nkosi Even if this is an XY problem, the Y in this case is fairly fundamental to any prospective solutions to X.
– Khyron
Jan 21 at 4:21
With basic understanding of the C# language it should be obvious why you get the error. So I'm voting unclear what you are asking, as explaining why will likely not solve your problem.
– nvoigt
Jan 21 at 8:30
With basic understanding of the C# language it should be obvious why you get the error. So I'm voting unclear what you are asking, as explaining why will likely not solve your problem.
– nvoigt
Jan 21 at 8:30
add a comment |
1 Answer
1
active
oldest
votes
From the look of it, your controller is simply trying to look up an invoice number. The nature of the error relating to converting a collection IEnumerable<Project.Dto.PaymentDto> to a single element string.
Consider what your query is asking the database: Please find me any invoices where the invoice number contains searchInvoiceNumber. The database may return zero, one or many results. What would that look like as a string? That's a nonsense question.
Try instead:
var data = payments.Where(s => s.InvoiceNumber.Contains(searchInvoiceNumber)).ToList();
Now data contains a zero, one or many PaymentDto items. It's up to you to decide what to do with that.
Note that your Payment class isn't being used so far. If you're trying to populate that directly from the query, that's probably a separate question.
answered Jan 21 at 4:18
KhyronKhyron
361210
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54277183%2fcannot-implicitly-convert-type-system-collections-generic-ienumerableproject-d%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
From the look of it, your controller is simply trying to look up an invoice number. The nature of the error relating to converting a collection IEnumerable<Project.Dto.PaymentDto> to a single element string.
Consider what your query is asking the database: Please find me any invoices where the invoice number contains searchInvoiceNumber. The database may return zero, one or many results. What would that look like as a string? That's a nonsense question.
Try instead:
var data = payments.Where(s => s.InvoiceNumber.Contains(searchInvoiceNumber)).ToList();
Now data contains a zero, one or many PaymentDto items. It's up to you to decide what to do with that.
Note that your Payment class isn't being used so far. If you're trying to populate that directly from the query, that's probably a separate question.
answered Jan 21 at 4:18
KhyronKhyron
361210
add a comment |
From the look of it, your controller is simply trying to look up an invoice number. The nature of the error relating to converting a collection IEnumerable<Project.Dto.PaymentDto> to a single element string.
Consider what your query is asking the database: Please find me any invoices where the invoice number contains searchInvoiceNumber. The database may return zero, one or many results. What would that look like as a string? That's a nonsense question.
Try instead:
var data = payments.Where(s => s.InvoiceNumber.Contains(searchInvoiceNumber)).ToList();
Now data contains a zero, one or many PaymentDto items. It's up to you to decide what to do with that.
Note that your Payment class isn't being used so far. If you're trying to populate that directly from the query, that's probably a separate question.
answered Jan 21 at 4:18
KhyronKhyron
361210
add a comment |
From the look of it, your controller is simply trying to look up an invoice number. The nature of the error relating to converting a collection IEnumerable<Project.Dto.PaymentDto> to a single element string.
Consider what your query is asking the database: Please find me any invoices where the invoice number contains searchInvoiceNumber. The database may return zero, one or many results. What would that look like as a string? That's a nonsense question.
Try instead:
var data = payments.Where(s => s.InvoiceNumber.Contains(searchInvoiceNumber)).ToList();
Now data contains a zero, one or many PaymentDto items. It's up to you to decide what to do with that.
Note that your Payment class isn't being used so far. If you're trying to populate that directly from the query, that's probably a separate question.
answered Jan 21 at 4:18
KhyronKhyron
361210
From the look of it, your controller is simply trying to look up an invoice number. The nature of the error relating to converting a collection IEnumerable<Project.Dto.PaymentDto> to a single element string.
Consider what your query is asking the database: Please find me any invoices where the invoice number contains searchInvoiceNumber. The database may return zero, one or many results. What would that look like as a string? That's a nonsense question.
Try instead:
var data = payments.Where(s => s.InvoiceNumber.Contains(searchInvoiceNumber)).ToList();
Now data contains a zero, one or many PaymentDto items. It's up to you to decide what to do with that.
Note that your Payment class isn't being used so far. If you're trying to populate that directly from the query, that's probably a separate question.
answered Jan 21 at 4:18
KhyronKhyron
361210
answered Jan 21 at 4:18
KhyronKhyron
361210
answered Jan 21 at 4:18
KhyronKhyron
361210
answered Jan 21 at 4:18
KhyronKhyron
361210
361210
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54277183%2fcannot-implicitly-convert-type-system-collections-generic-ienumerableproject-d%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
4
you declared
dataasstring. TheWheredoes not return a string. What are you actually trying to get? This may be an XY problem.– Nkosi
Jan 20 at 14:01
As @Nkosi mentioned,
Wherewould return anIEnumerablein your case. You can convert/project the source data type to target by using a projection likeSelectorAggregate(Aggregate can join each item into a single string, and also there is an example on doing that in the documentation docs.microsoft.com/en-us/dotnet/api/…) methods defined in LINQ.– Deniz
Jan 20 at 14:18
1
If you replace
string databyvar datayour error should disappear. But as the previous comments stated, it is unclear what you are trying to achieve here.– Sergioet
Jan 20 at 16:01
@Nkosi Even if this is an XY problem, the Y in this case is fairly fundamental to any prospective solutions to X.
– Khyron
Jan 21 at 4:21
With basic understanding of the C# language it should be obvious why you get the error. So I'm voting unclear what you are asking, as explaining why will likely not solve your problem.
– nvoigt
Jan 21 at 8:30