Recent questions tagged C#

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c# - How to retrieve the value of a ListView item in the same row as a LinkButton

I have a dynamically generated ListView which displays a set of groups, retrieved from a database. The ListView ... would be much appreciated! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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682 views

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c# - How can I send where statements to a method which are dynamically executed in a LINQ statement?

In the following example, GetFilteredCustomers() works fine so I can send various letters which I want customers to have in ... .ToList(); } } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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900 views

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c# - How to wordWrap the text in a column using ObjectListView

For example I have a big sentence: "I like to eat pie and have fun around the house all day long!" And ... . Thanks for the help in advanced See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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983 views

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c# - How to disable drop on wpf webbrowser control

How can I disable dropping of files on a System.Windows.Controls.WebBrowser? From the documentation it would seem ... security risk it creates? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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841 views

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c# - Save WinForm or Controls to File

I have been working on an application which allows the user to make a label template for printing purposes by ... be reused later? Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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853 views

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c# - Using EF Core 2.2 to decrypt a string using SQL Server DECRYPTBYKEY

Basically I have a POCO model that has a encrypted string. Using EF core 2.2. We use DECRYPTBYKEY to decrypt strings ... { get; set; } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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956 views

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c# - How to get number from a string

I would like to get number from a string eg: My123number gives 123 Similarly varchar(32) gives 32 etc Thanks in Advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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787 views

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c# - Error on using TransactionScope in EF4 & SQL Compact 4

using (TransactionScope scope = new TransactionScope()) using (var context = new dwfEntities()) { var field = ( ... can safely delete objects ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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864 views

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c# - Button click event doesn't work properly

This following code handle button click event. When the user click first time it sets the lable as "First Time", and ... } How can I fix it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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857 views

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c# - Converter with Dependency Properties

I have problems implementing a custom DependencyObject: I need a converter which sets or unsets a enum ... EnumerationConverter)); #endregion } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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771 views

1 answer

c# - Access Database error:: “No value given for one or more required parameters.”

I have a datagridview. In this DGV first colum is a combobox column. I want to make, when this combobox value is ... (); } } con.Close(); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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867 views

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c# 4.0 - ASP.NET 4.0 URL Routing - Similar MapPageRoutes

I will try to explain this the best I can. I created a CMS that allows you to create Categories and ... requires more information just ask. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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954 views

1 answer

c# - Self referencing loop from Newtonsoft JsonSerializer using Entity Framework Core

I've encountered the error: JsonSerializationException: Self referencing loop detected for property 'Subject' with type ' ... from the db. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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827 views

1 answer

c# - How to move 2D Object within camera view boundary

I have a scene that my camera doesn't follow my player. When player reaches the end of camera I want player to ... gets out of camera's view. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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883 views

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c# - Set control visible from other form

I set the button visible property to false of Form2. How I will make the button(Form2) visible when I click a button ... new Point(200, 200); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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843 views

1 answer

c# - "Message=unknown error: cannot focus element" while executing tests through Selenium, ChromeDriver and Chrome

I am trying to send key for a drop down list in google chrome browser but i am receiving this error OpenQA. ... selenium instead of send key ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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872 views

1 answer

c# - Implications of using AzureSearch SDK with static Dictionary of 30-40 ISearchIndexClients

I have an ASP.NET Web Application that uses 30-40 different search indexes across 5-6 search services ... .Search(searchText, searchParameters); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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906 views

1 answer

c# - Delete .xlsx or .pdf after closing file

I'm trying to delete .xlsx or .pdf files after using them. When files are created I display them, but then ... ? Thanks for help in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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765 views

1 answer

c# - Safe handling of daylight savings (or any other theoretical non-constant offset) while calculating durations between DateTimes

I know this isn't the first time this topic has been brought up even in the past 24 hours, but ... congress to abolish daylight savings. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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736 views

1 answer

c# - Serialize Dictionary<string,string> member to XML elements and data

I have a class 'products' that is serializable to XML. I'm using the standard System.Xml.Serialization. ... initial question (about Dictionary). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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767 views

1 answer

c# - comboBox2 (or any particular form item) is inaccessible due to its protection level

I am working on a win-forms. Currently working on the .cs class called HM_Settings.cs which works in conjunction ... avail. What could I do? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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764 views

1 answer

c# - How to compare 2 List<string> objects to get the missing value from the List<string>

How do I use the "NOT IN" to get the missing data, to be added to "foo" List. var accessories = new List ... the missing "Drivetrain" to it... } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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928 views

1 answer

c# - File drag and drop not working on listbox

This is the first time I am working with drag and drop. So I have a form with a listbox and nothing else ... Form1"; this.ResumeLayout(false); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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831 views

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c# - Is Nunit ExpectedException Working Correctly?

I started having problems earlier when setting up some command line scripts to test my NUnit suite of tests for ... version/platform I have? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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948 views

1 answer

c# - Reducing color depth in an image is not reducin the file size?

I use this code to reduce the depth of an image: public void ApplyDecreaseColourDepth(int offset) { int A, R, G ... { bitmapImage.Save(path); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

1 answer

c# - SQLBulkCopy inserts a new row with NULL values for all columns

I have this code which works fine and loads the excel data into an SQL table. The only problem is that it ... it. Any help is appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

729 views

1 answer

c# - WCF strange behaviour

I got this when I consume a webservice: Operation 'Login' of contract 'IServices' specifies multiple request body ... how to fix this error? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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797 views

1 answer

c# - VS 2019 and MySQL Entity Framework duplicate database name

I added Entity Framework to my project but I call the toList() method and I'm getting an error: okuldbEntities ent ... . really what can i do? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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