I have the following query: The problem is that I make the property ProjeAdı in the Select clause. I want the property to match the sql column, Proje Adı (note the space). How can I do that? Answer aliases cant have spaces between them , just like any variable name cant have white space, they are considered as bad naming
Tag: c#
An expression of non-boolean type specified in a context where a condition is expected, near ‘GROUP’
Hi guys I keep getting this error and I can’t figure it out. It works when I run the query in the database tool but not when it’s in my Microsoft web dev. The error i get is: An expression of non-boolean type specified in a context where a condition is expected, near ‘GROUP’. Code: Thanks in Advance for the
How to retrieve multiple column from SQL database?
I’m trying to get two column details like this way: public string GetData() { using (SqlConnection con = new SqlConnection(this.Connection)) { con.Open(); …
MS access Data type mismatch in criteria expression c#
I have error, i want to do a filter, which consist some combobox and datetimepicker and it’s will be show in dategridview. And when i want select date from datebase, i have this error: “Data type …
SqlCommand only returns one row
Trying to only return the first few number of rows because my database was too big, however when I was testing my SQL, I did a select * and was only returned the first row. What is wrong with my solution? Answer In your loop you constantly re-create the instance of the variable logs thus overwriting the previous one and
How to keep DropDownList1 selected value after postback?
I have two DropDownLists. Once a DropDownList1 value is selected, DropDownList2 will populate based on Dropdownlist1. But after the page refreshes, the dropdownlist1 selected value is changed to the …
Can’t delete a row using entity framework
The problem that I’m having is that I can’t delete a row when using entity. I’m able to find the row, but the error I get the next error: Additional information: Store update, insert, or delete statement affected an unexpected number of rows (0). Entities may have been modified or deleted since entities were loaded. See http://go.microsoft.com/fwlink/?LinkId=472540 for information on
how to get the ID of the record that is update in C#
I am able to get a sql query that can return the ID of a record that is update in the Database; that ID is needed to update other records. but I don’t know how to get that updated ID value in C#. Answer I think you’re really asking how do you retrieve the resultset returned by an INSERT or
Dumping SQL table to .csv C#
I am trying to implement a script in my application that will dump the entire contents (for now, but I am trying to write the code so that I can easily customize it to only grab certain columns) of a sql db (running ms sql server express 2014) to a .csv file. Here is the code I have written currently:
Retrieving SQL Generated by Entity Framework Core
I’m trying to retrieve the raw SQL generated by Entity Framework for the following LINQ query: pagedItemResults = from firstItem in dbData.Accession join secondItem in …