All Questions
1,324
questions
0
votes
0
answers
36
views
For Loop through filtered datatable using LINQ Select Clause?
Is it possible to loop through a filtered data table and update the items as needed?
In my 'For i As..Next' loop, I want to check the value of a specific column in the next row and if they're not ...
-1
votes
2
answers
32
views
Left Join on Data table with Where Clause using LinQ
I am trying to perform a left join on two data tables using LinQ and there are two WHERE Clause in it. Here is a snippet of the code:
I have tried the below code snippet:
var resultList = (from p in ...
0
votes
0
answers
46
views
VB.net Nested 'For Each' Loop Slow
Can someone suggest how I can improve the performance of my nested For Each loops? This logic accepts a string variable CSV style parameter and converts it into a data table. We are adding some ...
0
votes
0
answers
38
views
How check linq/xml against file when multiple conditions?
I have a project that reads xml of expected build results for each build area, and compares against build logs to see if the build passed. Right now, the linq is showing each condition in a separate ...
- 3,797
0
votes
0
answers
74
views
Adding rows to a datatable takes too long
If reader.AsDataSet.Tables(0).Rows.Count > 0 Then
Dim DistItemslist As New List(Of Eidos)
Dim dgv As New DataGridView()
Dim dic As New Dictionary(Of String, Integer)()
Dim ...
- 111
0
votes
1
answer
80
views
Joining tables using primary keys LINQ
I'm trying to join tables by primary keys using the PrimaryKey method (the ID column is the primary key in both tables). But at the end I get an empty table. Tell me how to make the request correct?
...
0
votes
1
answer
128
views
IEnumerable to datatable [duplicate]
Please tell me how to write the result of a query in a DataTable?
var result = from clients in Clients_dt.AsEnumerable()
join cities in Cities_dt.AsEnumerable()
on ...
1
vote
0
answers
38
views
Merge or Join two tables to a new table, but PKs differ
Say I have two tables in C#:
dt1 defines Codes; Code is the PK.
Code
A
B
C
A-110
foo
bar
buz
A-111
(NULL)
qem
sob
A-112
(NULL)
(NULL)
idk
dt2 refers to dt1's codes in a n:1 manner, but has ID as ...
- 13
0
votes
1
answer
97
views
C# LINQ Select rows from DataTable or DataView Where 2 Value Matches
I converted CRMDataSetSent into a DataTable/DataView containing the full list of records.
DataTable CRMDataSetSent_Dt = new DataTable();
da.Fill(CRMDataSetSent_Dt, Variables.CRMDataSetSent);
DataView ...
- 4,583
0
votes
0
answers
53
views
How to select particular columns from Datatable and insert into other Datatable in web API using linq Query
How to select particular columns in datatable and insert into other datatable . If there are 5 columns like ID, Name, PhNumber, Address,Salary in a Datatable I want to select only ID, Name, PhNumber ...
-1
votes
1
answer
79
views
How to lookup from the second source datatable to the first datatable with vb.net
How to lookup from the second source datatable to the first datatable with vb.net.
Is it possible to apply lookup datatable if possible? please guide me
Thanks
Private table1 As New DataTable
...
- 729
0
votes
1
answer
103
views
Convert a List<object[]> to List<object> where the count of object[] is dynamic
How could we convert a List<object[]> to List<object> where the count of objects in object[] is dynamic(in a single collection it is the same i.e. items[0].count is equal to items[1].count ...
- 5,058
0
votes
0
answers
112
views
DataTable Aggregate Function with Dynamic LINQ
I've an old project with following function that return a DataTable with aggregate function in Linq.
Now my goal is to use aggregate function with dynamic linq getting values from json file.
I've seen ...
- 101
0
votes
1
answer
47
views
c# linq Query on datatable groupby having count
I have a datatable and I need to perform the following query on it (sql):
SELECT C1, C2, C3, count(*)
FROM MyTable
group by C1, C2, C3
having COUNT (*) > 1
Can you point me to some code, in order ...
- 2,410
0
votes
1
answer
67
views
Convert multiple list of data into data table based on common property in c#
I have multiple list of signal datas with timestamp.
for ex SignalA contain list of {time, value} object. Similarly, SignalB contain list of {time, value} object.
I can have any number of such list, ...
- 1,294