в 15:31, 26 мая 2010

2010-05-26T15:31:53Z

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2010-05-26T12:16:25Z

1 версия

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==Add formatted string to StringBuilder==

<source lang="csharp">using System;
using System.Text;
class MainClass
{
public static void Main()
{
StringBuilder sb = new StringBuilder();
int number = 1;
sb.AppendFormat("{0}: {1} ", number++, "another string");
Console.WriteLine("{0}", sb);
}
}</source>
<pre class=codeResult>1: another string</pre>

==Append("A ").Append("B ").Append("C... ")==

<source lang="csharp">using System;
using System.Text;
public class MainClass
{
static void Main() {
StringBuilder sb = new StringBuilder();
sb.Append("A ").Append("B ").Append("C... ");
string built1 = sb.ToString();
sb.Append("D");
string built2 = sb.ToString();
Console.WriteLine( built1 );
Console.WriteLine( built2 );
}
}</source>
<pre class=codeResult>A B C...
A B C... D</pre>

==Append string and insert string to a StringBuilder==

<source lang="csharp">using System;
using System.Text;
class MainClass
{
static void Main(string[] args)
{
StringBuilder MyString = new StringBuilder("Hello");

MyString.Insert(0, "My");
MyString.Append("World");

Console.WriteLine(MyString);
}
}</source>
<pre class=codeResult>MyHelloWorld</pre>

==Display the contents of StringBuilder==

<source lang="csharp">using System;
using System.Text;
class MainClass
{
public static void Main()
{
StringBuilder myStringBuilder = new StringBuilder();

myStringBuilder.Append("myString");

myStringBuilder.Append("Here"s another string", 0, 4);

Console.WriteLine(myStringBuilder);
}
}</source>
<pre class=codeResult>myStringHere</pre>

==Set Length property of StringBuilder==

<source lang="csharp">using System;
using System.Text;
class MainClass
{
public static void Main()
{
StringBuilder sb = new StringBuilder("test string");
int length = 0;

length = sb.Length;
Console.WriteLine("The result is: "{0}"", sb);
Console.WriteLine("The length is: {0}", length);

sb.Length = 4;
length = sb.Length;
Console.WriteLine("The result is: "{0}"", sb);
Console.WriteLine("The length is: {0}", length);

sb.Length = 20;
length = sb.Length;
Console.WriteLine("The result is: "{0}"", sb);
Console.WriteLine("The length is: {0}", length);
}
}</source>
<pre class=codeResult>The result is: "test string"
The length is: 11
The result is: "test"
The length is: 4
The result is: "test "
The length is: 20</pre>

==StringBuilder: append value with format==

<source lang="csharp">using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Text;
using System.Security.Cryptography;
public class MainClass
{
public static void Main()
{
StringBuilder sb = new StringBuilder("Foo");
sb.AppendFormat("...{0}", DateTime.Now);
string final = sb.ToString();
Console.WriteLine(final);
}
}</source>
<pre class=codeResult>Foo...25/03/2007 3:03:25 PM</pre>

==StringBuilder: Length, Capacity, MaxCapacity==

<source lang="csharp">using System;
using System.Text;
class MainClass
{
public static void DisplayProperties(string name,StringBuilder myStringBuilder)
{
Console.WriteLine(name + ".Length = " + myStringBuilder.Length);
Console.WriteLine(name + ".Capacity = " + myStringBuilder.Capacity);
Console.WriteLine(name + ".MaxCapacity = " + myStringBuilder.MaxCapacity);
}
public static void Main()
{
StringBuilder myStringBuilder = new StringBuilder();
int capacity = 50;
StringBuilder myStringBuilder2 = new StringBuilder(capacity);
int maxCapacity = 100;
StringBuilder myStringBuilder3 = new StringBuilder(capacity, maxCapacity);
string myString = "To be or not to be";
StringBuilder myStringBuilder4 = new StringBuilder(myString);
int startIndex = 0;
int stringLength = myString.Length;
StringBuilder myStringBuilder5 = new StringBuilder(myString, startIndex, stringLength, capacity);
DisplayProperties("myStringBuilder", myStringBuilder);
DisplayProperties("myStringBuilder2", myStringBuilder2);
DisplayProperties("myStringBuilder3", myStringBuilder3);
DisplayProperties("myStringBuilder4", myStringBuilder4);
DisplayProperties("myStringBuilder5", myStringBuilder5);
}
}</source>
<pre class=codeResult>myStringBuilder.Length = 0
myStringBuilder.Capacity = 16
myStringBuilder.MaxCapacity = 2147483647
myStringBuilder2.Length = 0
myStringBuilder2.Capacity = 50
myStringBuilder2.MaxCapacity = 2147483647
myStringBuilder3.Length = 0
myStringBuilder3.Capacity = 50
myStringBuilder3.MaxCapacity = 100
myStringBuilder4.Length = 18
myStringBuilder4.Capacity = 32
myStringBuilder4.MaxCapacity = 2147483647
myStringBuilder5.Length = 18
myStringBuilder5.Capacity = 50
myStringBuilder5.MaxCapacity = 2147483647</pre>

==Use StringBuilder to reverse a string==

<source lang="csharp">using System;
using System.Text;
class MainClass
{
public static void Main()
{
string str = "www.nfex.ru";

StringBuilder revStr = new StringBuilder();
for (int count = str.Length - 1; count > -1; count--)
{
revStr.Append(str[count]);
}

Console.WriteLine(revStr.ToString());
}
}</source>
<pre class=codeResult>moc.s2avaj.www</pre>

==Use the AppendFormat() method to add a formatted string containing a floating point number to myStringBuilder==

<source lang="csharp">using System;
using System.Text;
class MainClass
{
public static void Main()
{
StringBuilder myStringBuilder = new StringBuilder();
myStringBuilder.Append("friends");

float myFloat = 1234.56789f;
myStringBuilder.AppendFormat("{0, 10:f3}", myFloat);
Console.WriteLine("myStringBuilder = " + myStringBuilder);
Console.WriteLine(myStringBuilder);
}
}</source>
<pre class=codeResult>myStringBuilder = friends 1234.568
friends 1234.568</pre>

==Use the Append() method to append a character to StringBuilder==

<source lang="csharp">using System;
using System.Text;
class MainClass
{
public static void Main()
{
StringBuilder myStringBuilder = new StringBuilder();

myStringBuilder.Append("myString");

myStringBuilder.Append("z", 5);

Console.WriteLine(myStringBuilder);
}
}</source>
<pre class=codeResult>myStringzzzzz</pre>

==Use the Append() method to append a substring to StringBuilder==

<source lang="csharp">using System;
using System.Text;
class MainClass
{
public static void Main()
{
StringBuilder myStringBuilder = new StringBuilder();

myStringBuilder.Append("myString");

myStringBuilder.Append("Here"s another string", 0, 4);

Console.WriteLine(myStringBuilder);
}
}</source>
<pre class=codeResult>myStringHere</pre>

==Use the Append() method to append two strings, an int, and a bool to StringBuilder==

<source lang="csharp">using System;
using System.Text;
class MainClass
{
public static void Main()
{
StringBuilder myStringBuilder = new StringBuilder();

myStringBuilder.Append("myString");
myStringBuilder.Append(" ... ");
int myInt = 1234;
myStringBuilder.Append(myInt);
bool myBool = true;
myStringBuilder.Append(myBool);

Console.WriteLine(myStringBuilder);
}
}</source>
<pre class=codeResult>myString ... 1234True</pre>

==Use the Insert() method to insert strings into StringBuilder==

<source lang="csharp">using System;
using System.Text;
class MainClass
{
public static void Main()
{
StringBuilder myStringBuilder = new StringBuilder();
myStringBuilder.Append("friends");

myStringBuilder.Insert(2, "friends, ");
myStringBuilder.Insert(2, "Romans, ", 3);
Console.WriteLine("myStringBuilder = " + myStringBuilder);
}
}</source>

==Use the Remove() method to remove part of StringBuilder==

<source lang="csharp">using System;
using System.Text;
class MainClass
{
public static void Main()
{
StringBuilder myStringBuilder = new StringBuilder();
myStringBuilder.Append("friends");

myStringBuilder.Insert(2, "friends, ");
myStringBuilder.Insert(2, "Romans, ", 3);
Console.WriteLine("myStringBuilder = " + myStringBuilder);

myStringBuilder.Remove(4, 7);
Console.WriteLine("myStringBuilder = " + myStringBuilder);
}
}</source>

==Use the Replace() method to replace part of StringBuilder==

<source lang="csharp">using System;
using System.Text;
class MainClass
{
public static void Main()
{
StringBuilder myStringBuilder = new StringBuilder();
myStringBuilder.Append("friends");

myStringBuilder.Insert(2, "friends, ");
myStringBuilder.Insert(2, "Romans, ", 3);
Console.WriteLine("myStringBuilder = " + myStringBuilder);

myStringBuilder.Replace(",", "?");
Console.WriteLine("myStringBuilder = " + myStringBuilder);
}
}</source>

==Use the ToString() method to convert StringBuilder to a string==

<source lang="csharp">using System;
using System.Text;
class MainClass
{
public static void Main()
{
StringBuilder myStringBuilder = new StringBuilder();

myStringBuilder.Append("friends");

string myString2 = myStringBuilder.ToString();
Console.WriteLine("myString2 = " + myString2);
}
}</source>
<pre class=codeResult>myString2 = friends</pre>

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в 15:31, 26 мая 2010

Admin: 1 версия