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1. Visual Studio 2012?
2. ?
3. ASP.NET?
4. Toolbox?
5. WebForml.aspx?
6. WebForml.aspx.cs?
7. 㳿 ASP.NET. Web-.
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WEB- Visual Studio2012.
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: # Microsoft Visual Studio 2012. . , , ,
: Microsoft Visual Studio 2012 Web-, , ( #) . 1, 2 .
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C#
, , '. ֳ , . C# ' . : , ' '.
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[ ] _ = new [];
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int[ ] array = new int[10];
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C# , System.Array, ' . , Array ( ), '.
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int[ ] array = new int[10];
............
array = new int[20];
, . new . :
int[ ] array = { 1, 2, 3, 4, 5 };
. . :
Int[ ] array = new int[5]{ 1, 2, 3, 4, 5 };
- , :
int[ ] array = new int[]{ 1, 2, 3, 4, 5 };
, . , .
int[ ] array = new int[5];
for (int i = 0; i < array.Length; i++)
array[i]= i;
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, string:
String[ ] st = new string[12];
, , , new. , : int[3] a={3,5,6};
C# , . , . , , "". , . , , "".
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Random rnd=new Random();
int[,] Matrix;
Matrix = new int[5, 4];
for (int i = 0; i < 5; i++)
for (int j=0;j<4;j++)
Matrix[i,j]= rnd.Next(10,99);
, :
for (int i = 0; i < 5; i++)
{
for (int j = 0; j < 4; j++)
{
Response.Write(Matrix[i, j].ToString());
Response.Write(" ");
}
Response.Write("<br/>");
}
"" , . :
Random rnd = new Random();
int[][] JMatrix = new int[5][];
for (int i = 0; i < JMatrix.Length; i++)
{
JMatrix[i]= new int[rnd.Next(1,7)];
}
ʳ . ʳ '. , , ( ). , .
for (int i = 0; i < JMatrix.Length; i++)
{
Response.Write("ʳ " +
i.ToString() + "=" + JMatrix[i].Length.ToString()+" ");
for (int j = 0; j < JMatrix[i].Length; j++)
{
Response.Write(JMatrix[i][j].ToString() + " ");
}
Response.Write("<br/>");
}
j Length.
Array
C# , . C# , Object.
Array - . ³ , C++ . , Array Object, Array , , , , . . Array:
| BinarySearch() | |
| Sort() | |
| Clear() | |
| CopyTo() | |
| GetLength(), Length | |
| GetLowerBound() | |
| GetUpperBound() | |
| GetValue() | |
| SetValue() | |
| Reverse() | |
| Rank |
Array. .
myArray Page, int:
static Array myArray = Array.CreateInstance(typeof(Int32), 6);
TextBox Button, tb_value btn_find .
, , . .
protected void btn_find_Click(object sender, EventArgs e)
|
|
|
{
Random rnd = new Random();
Response.Write(" <br/>");
for (int i = myArray.GetLowerBound(0); i <=
myArray.GetUpperBound(0); i++)
{
myArray.SetValue(rnd.Next(1, 10), i);
Response.Write(myArray.GetValue(i) + "\t");
}
Response.Write("<br/>");
Array.Sort(myArray);
Response.Write("ϳ :<br/>");
for (int i = myArray.GetLowerBound(0); i <=
myArray.GetUpperBound(0); i++)
{
Response.Write(myArray.GetValue(i) + "\t");
}
object = Convert.ToInt32(tb_value.Text);
int findIndex = Array.BinarySearch(myArray, );
if (findIndex<0)
{
Response.Write("<br/> ");
}
else
{
Response.Write("<br/> <b>"+findIndex.
ToString()+"</b>");
}
}
.2.1.
. 2.1 ,
, C# , Array.
C#
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| Length | . |
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| CompareTo() | . . , . |
| Copy() | . |
| Format() | ( ) {0}. |
| Insert() | . |
| Remove() Replace() | . |
| ToUpper() ToLower() | . |
| Chars | , . |
| Join() | , -. |
| Replace() | . |
| Split() | - , -. |
| Substring() | , . |
| Trim() | . |
| ToCharArray() | . |
C# . String . , , ', ', '. , "+" ' string , Concat().
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1
MakeLin, , , . . , sArr . ϳ , , , Join, sArr ' :
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protected void Page_Load(object sender, EventArgs e)
{
Response.Write(MakeLine(0, 5 ", "));
Response.Write("</br>");
Response.Write(MakeLine(1, 6 " "));
Response.Write("</br>");
Response.Write(MakeLine(9, 9 ": "));
Response.Write("</br>");
Response.Write(MakeLine(4, 7, "< "));
}
private static string MakeLine(int initVal, int multVal, string sep)
{
string[] sArr = new string[10];
for (int i = initVal; i < initVal+10; i++)
sArr[i-initVal]= String.Format("{0-3}", i * multVal);
return String.Join(sep, sArr);
}
.2.2.
.2.2 Join
, -.
2
, -. Split , . - . Trim, , , .
string words = ", ,
: .";
string [] split = words.Split(new Char [] {' ', '',, '.' ':'});
foreach (string s in split)
{
if (s.Trim()!= "")
Response.Write(s+"</br>");
}
ϳ , . 2.3.
. 2.3 Split
