有同事看我打開了VS，說能不能幫忙寫個例子，他也要學，入門大家都知道是簡單的，語言都是相通的嘛。
好了，下面簡單說下：
using System;
using System.IO;
using System.Linq;
using System.Drawing;
using System.Windows.Forms;//引用WINDOWS FRAMWORK 庫文件
這些都是系統(tǒng)自帶的庫，好比C語言自帶的庫。
也可以using其他外來的庫,好比C語言的.lib或.a之類。
然后C#中的枚舉：
//枚舉實列,
public enum BtnNameType
{
按鈕A,//
按鈕B,
按鈕C,
}
這個和C語言的也很類似，今天寫的例子有一個點就是程序可擴展性，就是以這個枚舉來擴展舉例
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
}
這個是窗體的類，繼承于FORM基類，是剛才System.Windows.Forms中的類。
InitializeComponent();是窗體的初始化，有興趣也可以去研究下，比較簡單。
private void checkBox1_CheckedChanged(object sender, EventArgs e)
還有
private void button2_Click(object sender, EventArgs e)
等等都是事件處理，好比C語言的事件或消息或郵箱或者變量標志
private void button3_Click(object sender, EventArgs e)
{
int cCurptr = 0;
for (cCurptr = 0; cCurptr < this.comboBox1.Items.Count; cCurptr++)
{
TreeNode cTreeNode = new TreeNode(this.comboBox1.Items[cCurptr].ToString());
this.treeView1.Nodes.Add(cTreeNode);
}
this.treeView1.Enabled = true;
this.button1.Enabled = true;
}
如上，C#里面也是有FOR循環(huán)，基本上和C一樣呢
private void BtnNameList_BtnClickEvent(object sender, System.EventArgs e)
{
int cIndex=(e as BtnList.BtnClickEventArgs).GetIndex;
switch ((BtnNameType)cIndex)
{
case BtnNameType.按鈕A:
{
MessageBox.Show("我是按鈕A");
}break;
case BtnNameType.按鈕B:
{
MessageBox.Show("我是按鈕B");
} break;
case BtnNameType.按鈕C:
{
MessageBox.Show("我是按鈕C");
} break;
}
}
這個就是按鈕點擊事件的集中處理了，相當于有了一個框架，如果要新增一個按鈕以及這個按鈕的點擊處理，那么
就只要兩個地方更改，一個是剛才的枚舉多加一個，另外就這個地方加個CASE處理
public enum BtnNameType
{
按鈕A,//
按鈕B,
按鈕C,
按鈕D,
}
case BtnNameType.按鈕C:
{
MessageBox.Show("我是按鈕C");
} break;
case BtnNameType.按鈕D:
{
MessageBox.Show("我是按鈕D");
} break;
所以說，框架和編程的思想也是通用的，一個程序要能夠很容易的擴展，降低維護成本
然后整體上就是一些常用控件的簡單使用，為了同事更好理解，特地按照顯示的箭頭操作，前一步操作后才能后一個使能操作
，這樣會比較好理解些。
具體的要看代碼，先貼上全部代碼來：
using System;
using System.IO;
using System.Linq;
using System.Drawing;
using System.Windows.Forms;//引用WINDOWS FRAMWORK 庫文件
//引用其他外來庫
//本工程只演示最常用幾個系統(tǒng)組件的用法，深入了解每個組件的用法請閱讀官網(wǎng)MDSN類庫說明
namespace WindowsFormsApplication1
{
//枚舉實列,
public enum BtnNameType
{
按鈕A,//
按鈕B,
按鈕C,
}
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void checkBox1_CheckedChanged(object sender, EventArgs e)
{
this.button5.Enabled = this.checkBox1.Checked;
}
private void button2_Click(object sender, EventArgs e)
{
int cCurptr = 0;
this.comboBox1.Enabled = true;
char[] cText = this.textBox1.Text.ToArray();
for (cCurptr = 0; cCurptr < cText.Length; cCurptr++)
this.comboBox1.Items.Add(cText[cCurptr]);
this.comboBox1.SelectedIndex = 0;
this.button3.Enabled = true;
}
private void button3_Click(object sender, EventArgs e)
{
int cCurptr = 0;
for (cCurptr = 0; cCurptr < this.comboBox1.Items.Count; cCurptr++)
{
TreeNode cTreeNode = new TreeNode(this.comboBox1.Items[cCurptr].ToString());
this.treeView1.Nodes.Add(cTreeNode);
}
this.treeView1.Enabled = true;
this.button1.Enabled = true;
}
private void Form1_Load(object sender, EventArgs e)
{
this.buttonList1.BtnClickEvent += new BtnList.ButtonList.BtnClickEventHandler(BtnNameList_BtnClickEvent);
this.buttonList1.GcBtnTxt = Enum.GetNames(typeof(BtnNameType));
this.buttonList1.BackColor = Color.BlueViolet;
}
private void BtnNameList_BtnClickEvent(object sender, System.EventArgs e)
{
int cIndex=(e as BtnList.BtnClickEventArgs).GetIndex;
switch ((BtnNameType)cIndex)
{
case BtnNameType.按鈕A:
{
MessageBox.Show("我是按鈕A");
}break;
case BtnNameType.按鈕B:
{
MessageBox.Show("我是按鈕B");
} break;
case BtnNameType.按鈕C:
{
MessageBox.Show("我是按鈕C");
} break;
}
}
private void button1_Click(object sender, EventArgs e)
{
int cCurptr = 0;
for (cCurptr = 0; cCurptr < this.treeView1.Nodes.Count; cCurptr++)
{
this.textBox2.Text += this.treeView1.Nodes[cCurptr].Text;
}
this.textBox2.Enabled = true;
this.button4.Enabled = true;
}
private void button4_Click(object sender, EventArgs e)
{
if (this.saveFileDialog1.ShowDialog() == DialogResult.OK)
{
string fileName = this.saveFileDialog1.FileName;
Stream stream = File.OpenWrite(fileName);
StreamWriter writer = new StreamWriter(stream);
writer.Write(this.textBox2.Text);
this.button1.Enabled = false;
this.button2.Enabled = false;
this.button3.Enabled = false;
this.button4.Enabled = false;
this.textBox1.Enabled = false;
this.textBox2.Enabled = false;
this.comboBox1.Enabled = false;
this.treeView1.Enabled = false;
}
}
private void button5_Click(object sender, EventArgs e)
{
this.textBox1.Enabled = true;
this.openFileDialog1.InitialDirectory = AppDomain.CurrentDomain.BaseDirectory;
this.openFileDialog1.Filter = "文本文件 | *.txt";
if (this.openFileDialog1.ShowDialog() == DialogResult.OK)
{
string fileName = this.openFileDialog1.FileName;
if (fileName!="")
{
string cText;
try
{
StreamReader sr = new StreamReader(fileName);
while ((cText = sr.ReadLine()) != null)
{
this.textBox1.Text += cText;
}
}
catch { }
this.button2.Enabled = true;
}
}
}
}
}
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