c# Questions

Getting System.Web.Mvc.SelectListItem as options of DropDownList – Asp.net

February 8, 2022
EL02
2 Answers

I have a ViewBag.CategoryList which contains ViewBag.CategoryList = new SelectList(Category.GetCategories()); My View: @Html.LabelFor(model => model.Category, htmlAttributes: new { @class = "control-label col-md-2" }) @Html.DropDownListFor(model => model.Category, new SelectList(ViewBag.CategoryList), "Select Category", htmlAttributes: new {@class = "form-control"}) What I'm getting is <option>System.Web.Mvc.SelectListItem</option>…

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Count and Sum functions with help of ViewBag – Asp.net

February 7, 2022
Antonieru
2 Answers

I have a question how to solve my problem. There is a table with items. Each item has a status "open" or "closed". For instance, 9 items with "closed" status and 14 ones with "open". I need to find the…

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SelectList always null on POST causes Model State to be Invalid – Asp.net

February 7, 2022
Eitan K
2 Answers

I understand that the SelectListItems are meant to not return back the items on post and perhaps be null, but because of this my ModelState.IsValid condition is always false and the Studies field which contains the list is the one…

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Passing array into query string – Asp.net

February 7, 2022
Dmitry
2 Answers

I need to send array as query parameter, I do it like this StringBuilder Ids = new StringBuilder(); for (int i = 0; i < array.Count; i++) { Ids.Append(String.Format("&id[{0}]={1}", i, items[i].ID)); } ifrDocuments.Attributes.Add("src", "Download.aspx?arrayCount=" + array.Count + Ids); After this…

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The model item passed into the ViewDataDictionary is of type '…', but this ViewDataDictionary instance requires a model item of type '…' – Asp.net

February 6, 2022
IkkiArtz
2 Answers

What am I doing? I am trying using two modal in one view. What's the problem? When run give this error: An unhandled exception occurred while processing the request. InvalidOperationException: The model item passed into the ViewDataDictionary is of type…

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Convert Swift graphics code to UIKit in Xamarin iOS C# – Ios swift

February 6, 2022
Alex Kay
2 Answers

I need to crop an image to a circle in my Xamarin app. This is platform-dependent, so it'd have to use the UIKit. I've found the following Swift code (credit Cut a UIImage into a circle): extension UIImage { var…

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Search multiple column values with one search string – Asp.net

February 6, 2022
K. Thomas
3 Answers

I have this query where I want to return results if the search string provided yields data from the 'FirstName' and 'LastName' column of my database. They each work individually as I can get results for Firstname = 'john' and…

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How to handle multiple sessions for same website using same browser with different tabs. ASP.net C#

February 5, 2022
Swetha Bk
2 Answers

How to handle multiple sessions for same website using same browser with different tabs. ASP.net C#. example like google if we open 2 account in same browser it will not effect user details.

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smtp.office365.com Failure sending mail. Unable to read data from the transport connection: net_io_connectionclosed – Asp.net

February 4, 2022
Giox
2 Answers

I have a support ticket web application, very old, done in ASP.NET webforms Until 5 October 2021 it has worked perfectly, then has started to miss, sometimes to send out emails. In the last few days has started to miss…

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Xcode – How do I create/play audio in C++?

February 4, 2022
Rhys Williams
2 Answers

I'm pretty new to C++, but have some experience with Python. I wanted to make a program that played certain frequencies based on different conditions, but I soon realized I couldn't even figure out how to play an audio file.…

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