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how to count the number of records with ExecuteScalar if more than one then cannot insert into in the MS Access database on vb.net

score 233 · Answer 1 · 2023-07-03T08:57:31.473000

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how to count the number of records with ExecuteScalar if more than one then cannot insert into in the MS Access database on vb.net

233 views Asked by roy At 03 July 2023 at 08:57

score 1210 · Answer 2 · 2022-06-27T13:08:23.667000

The first item in a list-expansion cannot be null

1.2k views Asked by Anonymous At 27 June 2022 at 13:08

score 579 · Answer 3 · 2022-05-15T08:53:42.010000

System.InvalidOperationException: 'Connection must be valid and open.'

579 views Asked by ENKHSUREN ENKHSUREN At 15 May 2022 at 08:53

score 632 · Answer 4 · 2022-04-23T16:12:06.627000

why do i get error Must declare the scalar variable "@x". while the query works in the sql window?

632 views Asked by roee oselka At 23 April 2022 at 16:12

score 1014 · Answer 5 · 2022-01-09T14:00:48.307000

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score 535 · Answer 6 · 2021-10-05T15:24:57.547000

SqliteCommand.ExecuteScalar() returns null (C# 5.0 and System.Data.Sqlite)

535 views Asked by Iroqas At 05 October 2021 at 15:24

score 2468 · Answer 7 · 2021-07-01T02:46:17.893000

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2.4k views Asked by T L At 01 July 2021 at 02:46

score 231 · Answer 8 · 2021-04-16T00:23:05.350000

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231 views Asked by Charlotte Williams At 16 April 2021 at 00:23

score 129 · Answer 9 · 2021-01-31T16:48:35.097000

ExecuteScalar method to retrieve SQL Server 2019 table column list in Visual Studio 2019 c-sharp is incorrectly ASCII sorted

129 views Asked by shawnmandel At 31 January 2021 at 16:48

score 361 · Answer 10 · 2021-01-16T21:02:17.563000

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361 views Asked by Andrus At 16 January 2021 at 21:02

score 220 · Answer 11 · 2020-09-09T16:01:23.223000

ExecuteScalar function fails. Must declare the scalar variable '@DeviceId'

220 views Asked by Gabriel At 09 September 2020 at 16:01

score 2282 · Answer 12 · 2020-09-06T00:05:38.857000

Why am I getting "Specified Cast is Not Valid" casting an int return value to int?

2.2k views Asked by B. Clay Shannon-B. Crow Raven At 06 September 2020 at 00:05

score 1336 · Answer 13 · 2020-06-04T10:47:11.197000

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1.3k views Asked by BlackHole At 04 June 2020 at 10:47

score 182 · Answer 14 · 2020-05-19T02:52:10.960000

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182 views Asked by Sheharyar Khan Durrani At 19 May 2020 at 02:52

score 72 · Answer 15 · 2020-03-21T13:52:27.383000

Problem with taking data from a table using Execute Scalar (C#)

72 views Asked by Tom Keenan At 21 March 2020 at 13:52

score 336 · Answer 16 · 2020-02-17T19:36:21.150000

npgsql executescalar() allways returns nothing

336 views Asked by Rainer At 17 February 2020 at 19:36

score 500 · Answer 17 · 2020-02-16T13:38:28.057000

Select with a ExecuteScalar() not working when i use a variable, always return empty, when i don't use variable it works - C#

500 views Asked by José Souza At 16 February 2020 at 13:38

score 67 · Answer 18 · 2019-12-18T07:14:18.927000

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67 views Asked by darren At 18 December 2019 at 07:14

score 320 · Answer 19 · 2019-09-08T10:47:47.760000

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320 views Asked by kozyalcin At 08 September 2019 at 10:47

score 46 · Answer 20 · 2019-06-23T20:44:02.127000

How to fix executescalar not having an output

46 views Asked by Jesse Oosterwijk At 23 June 2019 at 20:44

TechQA.

List Question

how to count the number of records with ExecuteScalar if more than one then cannot insert into in the MS Access database on vb.net

The first item in a list-expansion cannot be null

System.InvalidOperationException: 'Connection must be valid and open.'

why do i get error Must declare the scalar variable "@x". while the query works in the sql window?

C# Using ExecuteScalar() Method With Where Clause in SqlCommand

SqliteCommand.ExecuteScalar() returns null (C# 5.0 and System.Data.Sqlite)

ExecuteScalarAsync() does not return the same value returned from stored procedure

ExecuteScalar not returning value when there should be one

ExecuteScalar method to retrieve SQL Server 2019 table column list in Visual Studio 2019 c-sharp is incorrectly ASCII sorted

Get value from sql select if parameter may be null

ExecuteScalar function fails. Must declare the scalar variable '@DeviceId'

Why am I getting "Specified Cast is Not Valid" casting an int return value to int?

Dynamic SQL Query in C#

Data type mismatch using execute scalar

Problem with taking data from a table using Execute Scalar (C#)

npgsql executescalar() allways returns nothing

Select with a ExecuteScalar() not working when i use a variable, always return empty, when i don't use variable it works - C#

Checking if record exist for 2 datatable

Object cannot be assigned to other types from DBNull

How to fix executescalar not having an output

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