c# - Make first letter of a string upper case (with maximum performance) - Stack Overflow

PHOTO

Thu Dec 08 2022 22:58:46 GMT+0000 (Coordinated Universal Time)

Saved by @Hack3rmAn #cs

public static string FirstCharToUpper(string input)
{
    if (String.IsNullOrEmpty(input))
        throw new ArgumentException("ARGH!");
    return input.First().ToString().ToUpper() + input.Substring(1);
}

https://stackoverflow.com/questions/4135317/make-first-letter-of-a-string-upper-case-with-maximum-performance

Save snippets that work from anywhere online with our extensions

Available in the Chrome Web Store

Get Firefox Add-on

Get VS Code extension

Comments

More like this

Inserting a tab character into text using C# - Stack Overflow

Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
    TextBox1.Text = "Bernard" + vbTab + "32"
    TextBox2.Text = "Luc" + vbTab + "47"
    TextBox3.Text = "François-Victor" + vbTab + "12"
End Sub

Convert datatable to JSON in C# - Stack Overflow

string JSONresult;
JSONresult = JsonConvert.SerializeObject(dt);  
Response.Write(JSONresult);

c# get assembly executable directory - Stack Overflow

string assemblyPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);

Generic c# - Raise an event whenever a property's value changed? - Stack Overflow

public class MyClass : INotifyPropertyChanged
{
    private string imageFullPath;

    protected void OnPropertyChanged(PropertyChangedEventArgs e)
    {
        PropertyChangedEventHandler handler = PropertyChanged;
        if (handler != null)
            handler(this, e);
    }

    protected void OnPropertyChanged(string propertyName)
    {
        OnPropertyChanged(new PropertyChangedEventArgs(propertyName));
    }

    public string ImageFullPath
    {
        get { return imageFullPath; }
        set
        {
            if (value != imageFullPath)
            {
                imageFullPath = value;
                OnPropertyChanged("ImageFullPath");
            }
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;
}

#html #cs #heart

Heart in Css&Html

<!DOCTYPE html>
<html>
<head>
<title>Font Awesome Icons</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
</head>
<body>

<h1>fa fa-heart</h1>

<i class="fa fa-heart"></i>
<i class="fa fa-heart" style="font-size:24px"></i>
<i class="fa fa-heart" style="font-size:36px;"></i>
<i class="fa fa-heart" style="font-size:48px;color:red"></i>
<br>

<p>Used on a button:</p>
<button style="font-size:24px">Button <i class="fa fa-heart"></i></button>

<p>Unicode:</p>
<i style="font-size:24px" class="fa">&#xf004;</i>

</body>
</html>

c# - dotnet restore failing when mixing private nuget feed and NEST - Stack Overflow

C:\Program Files\dotnet\sdk\1.0.0\NuGet.targets(97,5): error : Unable to load the service index for source https://{myaccount}.pkgs.visualstudio.com/_packaging/{myfeed}/nuget/v3/index.json.\r `[C:\Users\test\dotnet\dotnet.csproj]
C:\Program Files\dotnet\sdk\1.0.0\NuGet.targets(97,5): error :   Response status code does not indicate success: 401 (Unauthorized). [C:\Users\test\dotnet\dotnet.csproj]

Printing number with for loops in c# - Stack Overflow ( Advanced )

using System;
using System.Collections.Generic;

public class Program
{
    public static IEnumerable<int> GetRangeWithInverse( int count ) {
        for (var i = count; i > 0; i--) {
            yield return i;
            if (i > 1) {
                yield return count - i + 1;
            }
        }
    }

    public static void Main()
    {
        Console.WriteLine(string.Join( ',', GetRangeWithInverse( 10 ) ) );
    }
}

c# - How do I generate a stream from a string? - Stack Overflow

public static MemoryStream GenerateStreamFromString(string value)
{
    return new MemoryStream(Encoding.UTF8.GetBytes(value ?? ""));
}

kendo ui - KendoUI charts with Asp.net MVC - Stack Overflow

<div class="chart-wrapper">
@(Html.Kendo().Chart<ChartExample.Models.ChartModel>()
    .Name("chart")
    .Title("Example Column Chart")
    .Legend(legend => legend
        .Position(ChartLegendPosition.Top)
    )
    .DataSource(ds => ds.Read(read => read.Action("GetChartData", "Charts")))
    .Series(series => {
        series.Column(model => model.Val2).Name("Val2");
        series.Column(model => model.Val3).Name("Val3");
    })
    .CategoryAxis(axis => axis
        .Categories(model => model.Year)
        .Labels(labels => labels.Rotation(-90))
    )
    .ValueAxis(axis => axis.Numeric()
        .Labels(labels => labels.Format("{0:N0}"))
        .MajorUnit(10000)
    )
) 
</div>

c# - MVC model boolean display yes or no - Stack Overflow

public bool? IsActive { get; set; }

public string IsActiveDescriptor => IsActive.HasValue && IsActive ? "Yes" : "NO";

Mover un formulario de un lugar a otro

using System.Runtime.InteropServices;

public const int WM_NCLBUTTONDOWN = 0xA1;
public const int HT_CAPTION = 0x2;

[DllImportAttribute("user32.dll")]
public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
[DllImportAttribute("user32.dll")]
public static extern bool ReleaseCapture();

private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{     
    if (e.Button == MouseButtons.Left)
    {
        ReleaseCapture();
        SendMessage(Handle, WM_NCLBUTTONDOWN, HT_CAPTION, 0);
    }
}

c# - Open Notepad++ with arguments

private void openLog() {
            try {
                // see if notepad++ is installed on user's machine
                var nppDir = (string)Registry.GetValue("HKEY_LOCAL_MACHINE\\SOFTWARE\\Notepad++", null, null);
                if (nppDir != null) {
                    var nppExePath = Path.Combine(nppDir, "Notepad++.exe");
                    var nppReadmePath = Path.Combine(yourDirectory,fileName );
                    var line = 20;
                    var sb = new StringBuilder();
                    sb.AppendFormat("\"{0}\" -n{1}", nppReadmePath, lineNo);
                    Process.Start(nppExePath, sb.ToString());
                } else {
                    string newPath = @"\\mySharedDrive\notpad++\bin\notepad++.exe";
                    Process.Start(newPath, @"\\" + filePath + " -n" + lineNo); // take exe from my shared drive
                }
            } catch (Exception e) {
                Process.Start(@"\\" + FilePath); // open using notepad
            }
        }

Open file for reading with notepad++

Process myProcess = new Process(); 
Process.Start("notepad++.exe", "\"c:\\file name for test.txt\"");

c# - Unable to cast object of type grouping to datarow after i grouped datatable with linq - Stack Overflow

var query1 = dtClone.AsEnumerable().Select(row => row.Field<string>("department")).Distinct().OrderBy(s => s);

C# Base64 String to JPEG Image - Stack Overflow

public Image Base64ToImage(string base64String)
{
   // Convert Base64 String to byte[]
    byte[] imageBytes = Convert.FromBase64String(base64String);
    MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length);

    // Convert byte[] to Image
    ms.Write(imageBytes, 0, imageBytes.Length);
    Image image = Image.FromStream(ms, true);

    return image;
}

Browse more snippets >>