Recent questions tagged C#

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c# - How to send a 'conversationUpdate' to Microsoft Teams from bot manually?

I have a bot written with the help of bot framework v4. The bot is integrated with Microsoft Teams. I want to ... in Teams please let me know. See Question&Answers more detail:os...

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

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479 views

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c# - Form move inside client desktop area

My goal is to prevent partial or total hidden of my form when user move it through mouse. For instance, ... Any suggestion will be 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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c# - ASP.Net Identity built in functions with custom tables in ASP.Net Core

I am using ASP.Net Core Web Api 2 on .Net 2.1 Framework I have custom AppUsers and AppRoles tables ... better understanding in those functions. See Question&Answers more detail:os...

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

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504 views

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c# - Can't get values from rows/cells in GridView

I'm trying get values from a GridView using the following code: foreach (GridViewRow row in this.dgvEstudios ... set EnableViewState to true See Question&Answers more detail:os...

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

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910 views

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c# - How to get the text from current cell in datagridview textchanged event?

i am making a windows form application in which i used a datagridview. i want that when i write something in ... MessageBox.Show(str); } } See Question&Answers more detail:os...

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

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561 views

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c# - Why does Code Analysis tell me, "Do not dispose objects multiple times" here:

On this code: public static string Base64FromFileName(string fileName) { try { FileInfo fInfo = new FileInfo(fileName); long ... (); . . . ? See Question&Answers more detail:os...

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

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489 views

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c# - WinForms interthread modification

Whenever I want to modify a winform from another thread, I need to use ->Invoke(delegate, params) so ... all languages where winform can run See Question&Answers more detail:os...

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

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586 views

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c# - Fetch RTF from Word

I have a Word document and would like to export the content including the format as RTF (or html). Word. ... without hte format. Any ideas? See Question&Answers more detail:os...

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

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615 views

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c# - The type or namespace name 'Window' does not exist in the namespace 'System.Windows'

I am trying to write an extension method for the WPF Window class. I am doing it in a class library project ... . What am I doing wrong? See Question&Answers more detail:os...

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

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550 views

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c# - CopyFileEx "The parameter is invalid" error

I'm writing a (fairly) simple C# application using .NET 4 to check for updates before running an executable. If a ... for a few hours now... See Question&Answers more detail:os...

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

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757 views

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c# - "Can't find PInvoke DLL 'dbnetlib.dll'." error in Smart Device Application

I am creating a program in Visual Studio Pro 2008, and I am trying to access a SQL database from my ... suggestions 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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408 views

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c# - Problems with AJAX CascadingDropDown and DropDownList SelectedValue in EditItemTemplate

I am having problem in EditItemTemplate of FormView. When I use such code in InsertItemTemplate everything works: < ... to solve this problem? See Question&Answers more detail:os...

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

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465 views

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c# - Retrieve an image from access database

Please can anyone help me in this code ?? I am trying to retrieve an image from an Access database.. private void ... ms.Dispose(); return bm; } See Question&Answers more detail:os...

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

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732 views

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c# - Build JObject from JSONPath

I'm a bit new to using the Newtonsoft JSON library for .NET. Is there any way to create a JObject or JToken from a ... { "Property": "" }] } } See Question&Answers more detail:os...

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

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462 views

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c# - passing an operand as an sql parameter

I am currently working on an asp.net application that has sql server 2008 as its backend. I want to give the user the ... which is = < > <= >= See Question&Answers more detail:os...

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

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586 views

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c# - Reading attached files from database using OLE-DB

I'm trying to read a Microsoft Access Database using C#. I'm using the OLE-DB classes. The Problem is ... read attached files from a database? See Question&Answers more detail:os...

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

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829 views

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c# - DynamoDB .NET - Delete all items from a table

I'm learning how to work with DynamoDB for .net and I have a doubt, Is there a correct way to delete all items ... with the value "a". 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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646 views

1 answer

c# - XSD: Using Visual studio xsd.exe not generating Array[] instead of List<>

Im using the xsd.exe tool to generate classes from a xsd file. The xsd file: <?xml version="1.0" encoding=" ... this? Or some other way? Thx! See Question&Answers more detail:os...

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

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429 views

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c# - Problems with RavenDB.Client reference in asp.net 5.0 project.json

I'm trying to build a RavenApiController with the new ASP.NET 5.0 (aka Asp.Net vNext) stuff and can't seem to get ... ' in 'ASP.NET Core 5.0'. See Question&Answers more detail:os...

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

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557 views

1 answer

c# - HttpWebResponse: closing the stream

I'm getting the response from an HttpWebRequest (using a modified version Jeff Richter's CCR wrappers), then ... it is the same stream? See Question&Answers more detail:os...

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

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527 views

1 answer

c# - WCF Web Services, returning an Error/exception string

I have a set of WCF web services, which, if an exception occurs, will use OutgoingWebResponseContext to return ... for all of your suggestions! See Question&Answers more detail:os...

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

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538 views

1 answer

c# - Converting List<string> to EntityFramework column/field list

Using EntityFramework, I can get a list of entities of a certain type using the following syntax: List<Customer ... ") .Select(parmList); See Question&Answers more detail:os...

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

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554 views

1 answer

c# - Run a code in given time interval

I would like to run a code every 1 minute ,15 minute etc Is there any better way than following put in the timer ... 'run code for 1 min End If See Question&Answers more detail:os...

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

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819 views

1 answer

c# - How can I improve the performance of retrieving values from SharedStringTable in OpenXml Excel spreadsheet tools?

I'm using DocumentFormat.OpenXml to read an Excel spreadsheet. I have a performance bottleneck with the code ... of optimising this operation? See Question&Answers more detail:os...

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

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509 views

1 answer

c# - Parse huge OData JSON by streaming certain sections of the json to avoid LOH

I have an OData response as JSON (Which is in few MBs) and the requirement is to stream "certain parts of ... is to manually parse the stream? See Question&Answers more detail:os...

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

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514 views

1 answer

c# - Programmatically find when the ASP.NET worker process and app domain last started?

In ASP.NET: How can I tell when the ASP.NET worker process last restarted? In ASP.NET, how can I tell when the app domain last recycled? See Question&Answers more detail:os...

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

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473 views

1 answer

c# - Using built-in sql functions in a LINQ query?

Is it possible to use buillt-in sql functions like user_name() in a LINQ query? If not, can I use something else? See Question&Answers more detail:os...

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

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417 views

1 answer

c# - How to add a Hyperlink to a dynamic gridview column

I have an issue hope someone can help. I have a dynamic Gridview. I need to have a hyperlink on gridview ... = CurrentDataItem.ToString(); } } See Question&Answers more detail:os...

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

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