OrderBy Key Dictionary C#

C# > LINQ Query Expressions > OrderBy Key Dictionary

dictionary.OrderBy(key => key.Key);

'cmake' is not recognized as an internal or external command error

'cmake' is not recognized as an internal or external command

Solution:

Add the path to system variables Path

Visual Studio show Decrease Increase Line Indent Buttons

Visual Studio > Decrease/Increase Line Indent buttons

Go o the toolbar and press:

than check Decrease/Increase Line Indent:

Find max value of a column in a DataTable c#

C# > System.Data   > DataTable > Max Value

Find max value of a column in a DataTable C#.

var maxValue = DataTable1.AsEnumerable().Max(r => r.Field<double>("value"));

Telerik report bind to DataTable and add a sample calculated field

Telerik > Reporting > Bind to DataTable

Example
Bind to DataTable and add a sample calculated field.

string connString = "Data Source=(local)\\SQLEXPRESS;Initial Catalog=HR;Integrated Security=True";

string cmdText = "SELECT FirstName, LastName FROM Person;";

SqlDataAdapter da = new SqlDataAdapter(cmdText, connString);

DataTable dt = new DataTable();

dataAdapter.Fill(dt);

Telerik.Reporting.ObjectDataSource ods = new Telerik.Reporting.ObjectDataSource();

ods.DataSource = dt;

ods.CalculatedFields.Add(new Telerik.Reporting.CalculatedField("FullName", typeof(string), "=Fields.FirstName + ' ' + Fields. LastName ")); 

Telerik.Reporting.Report rpt = new Telerik.Reporting.Report();

rpt.DataSource = objectDataSource;

Telerik.Reporting.InstanceReportSource reportSource = new Telerik.Reporting.InstanceReportSource();

reportSource.ReportDocument = rpt;

reportViewer1.ReportSource = reportSource;

reportViewer1.RefreshReport();

Choose Visual Basic Example

VB.NET > Functions > Choose

Returns a member of the list passed in Choice().
It is based on the value of Index. The first member of the list is selected when Index is 1.

Example

Dim choice = Choose(2, "val1", "val2", "val2") // "val2"

Appends text to a file C#

C# > Files > File Class > AppendText

Appends text to an existing file or create a new file if the specified file does not exist.

Example

using(System.IO.StreamWriter sw = System.IO.File.AppendText(@"c:\log.txt"))

{
      sw.WriteLine("logline");
}