Winform的学习

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昨天由于一些原因没有上课啦，虽然也看啦一些东西，但是感觉太少也就没有来啦，嘿嘿，今天认真地了解啦winform，学习了一些控件的使用，但是感觉好多属性知道怎么用的，却还是记得不太清楚，感觉看到啦知道，之后可能又会全然忘记啦，虽然这个winform已经不再用啦，但是还想是想好好学习下啦，只怕那天再次遇到啦还要自己在找资料啦，所以我还是详细的总结下啦

一.弹窗

在Form中弹出另外一个窗体，首先建立一个Form窗体，把Form转变为容器改变其属性为IsMdiContainer，改变其属性如下：

然后在工具中选取MenuStrip工具，添加其标题，建立其他子窗体：

在父窗体中实现弹窗功能代码如下：

public partial class frmMain : Form
{
public frmMain()
{
InitializeComponent();
}
private void 弹出主窗体ToolStripMenuItem_Click(object sender, EventArgs e)
{
Form2 f2 = new Form2();
f2.MdiParent = this;
Form3 f3 = new Form3();
f3.MdiParent = this;
Form4 f4 = new Form4();
f4.MdiParent = this;
Form5 f5 = new Form5();
f5.MdiParent = this;
Form6 f6 = new Form6();
f6.MdiParent = this;
Form7 f7 = new Form7();
f7.MdiParent = this;
Form8 f8 = new Form8();
f8.MdiParent = this; f2.Show(); f3.Show(); f4.Show();
f5.Show(); f6.Show(); f7.Show();
f8.Show();
} private void 弹出纵向主窗体ToolStripMenuItem_Click(object sender, EventArgs e)
{
this.LayoutMdi(MdiLayout.TileVertical);
} private void 弹出横向主窗体ToolStripMenuItem_Click(object sender, EventArgs e)
{
this.LayoutMdi(MdiLayout.TileHorizontal);
}
}

二.图片控件PictureBox的使用

设计Form窗体如下所示，添加一个PictureBox控件，然后选择添加两个按钮，最好下载一组图片以便于备用，然后实现其点击按钮上一张可以在PictureBox中显示上一张图片，点击按钮下一张，可以再PictureBox中显示下一张图片，代码如下：

public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
int i = ;
private void Form1_Load(object sender, EventArgs e)
{
string[] arraypath = Directory.GetFiles(@"G:\image");
this.pictureBox1.Image = Image.FromFile(arraypath[]);
}
private void btnpre_Click(object sender, EventArgs e)
{
string[] arraypath = Directory.GetFiles(@"G:\image"); if (i == )
{
this.pictureBox1.Image = Image.FromFile(arraypath[arraypath.Length - ]);
i = arraypath.Length - ;
}
else
{
i--;
this.pictureBox1.Image = Image.FromFile(arraypath[i]);
}
}
private void button2_Click(object sender, EventArgs e)
{
string[] arraypath = Directory.GetFiles(@"G:\image"); if (i == arraypath.Length - )
{
this.pictureBox1.Image = Image.FromFile(arraypath[]);
i = ;
}
else
{
i++;
this.pictureBox1.Image = Image.FromFile(arraypath[i]);
}
}
}

三.图片幻灯片形式播放

在Form窗体中选择添加控件PictureBox，然后添加一控件Timer即可，然后设置Timer的属性其属性，实现代码如下：

public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
string[] arraypath = Directory.GetFiles(@"G:\image");
this.pictureBox1.Image = Image.FromFile(arraypath[]);
}
int i = ;
private void timer1_Tick(object sender, EventArgs e)
{
string[] arraypath = Directory.GetFiles(@"G:\image");
i++;
if (i == arraypath.Length)
{
i = ;
this.pictureBox1.Image = Image.FromFile(arraypath[i]);
}
else
{
this.pictureBox1.Image = Image.FromFile(arraypath[i]);
}
}
}

四.richBox。

简单的说, 比普通textbox多的功能: 可以为每个字设定独立的字体,字号,颜色等..可以添加图片, 可以添加OLD对象.还比textbox多了很多种方法，比如直接打开文件，打印文件等。下面简单的实现下其功能：新建一个Form窗体，然后选择一个richBox控件，在文本框中选择写入一些文本，然后实现其事件，格式以及代码如下：

private void richTextBox1_TextChanged(object sender, EventArgs e)
{
this.richTextBox1.AppendText("我被你写入了这个对话框里面");
}

五.comboBox的使用

combobox在这里使用时间需要注意的是，仅仅能够选择单项。

public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
string[] strs = {"--请选择下拉项--", "C语言也能干大事","在校不迷茫","毕业即辉煌" };
this.comboBox1.Items.AddRange(strs);
this.comboBox1.SelectedItem = this.comboBox1.Items[];
}
}

六.textbox和webBrowser的简单使用

private void button1_Click(object sender, EventArgs e)
{
string urlpath = this.textBox1.Text;
Uri uri = new Uri("http://"+ urlpath);
this.webBrowser1.Url = uri;
}

实现输入网址可以打开其网页的功能，例如：打开如鹏网。

七.实现区域的三级分类

在Form窗体上面选择三个textbox即可，然后实现其功能，代码入下：

public partial class Form1 : Form
{
string[] Sheng = { "--请选择省份--", "河南省", "湖南省" };
string[] Henancity = { "--请选择城市--", "郑州", "洛阳", "开封" };
string[] HuNancity = { "--请选择城市--", "长沙", "湘潭", "株洲" }; string[] zhengzhouArea = {"高新区","中原区","金水区","管城区","二七区","惠济区","郑东新区","航空港区","经开区" };
string[] changshaArea = {"雨花区","芙蓉区","高桥区","岳麓区","韶山区" };
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
this.cmbsheng.Items.AddRange(Sheng);
this.cmbsheng.SelectedIndex = ;
}
private void cmbsheng_SelectedIndexChanged(object sender, EventArgs e)
{
int index = this.cmbsheng.SelectedIndex;
switch (index)
{
case :
this.cmbcity.Items.Clear();
this.cmbcity.Items.AddRange(Henancity);
this.cmbcity.SelectedIndex = ; break;
case :
this.cmbcity.Items.Clear();
this.cmbcity.Items.AddRange(HuNancity);
this.cmbcity.SelectedIndex = ;
break;
default:
break;
}
}
private void cmbcity_SelectedIndexChanged(object sender, EventArgs e)
{
int index=this.cmbcity.SelectedIndex;
object selecttext = this.cmbcity.SelectedItem; switch (index)
{
case :
if (selecttext.Equals("郑州"))
{
this.cmbarea.Items.Clear();
this.cmbarea.Items.AddRange(zhengzhouArea);
this.cmbarea.SelectedIndex = ;
}
else if(selecttext.Equals("长沙"))
{
this.cmbarea.Items.Clear();
this.cmbarea.Items.AddRange(changshaArea);
this.cmbarea.SelectedIndex = ;
}
break;
case :
this.cmbarea.Items.Clear();
this.cmbarea.Items.AddRange(null);
this.cmbarea.SelectedIndex = ;
break;
case :
this.cmbarea.Items.Clear();
this.cmbarea.Items.AddRange(null);
this.cmbarea.SelectedIndex = ;
break;
}
}
}

八.用ListBox和PictureBox实现其在ListBox中选择图片的序列，在picturebox中显示图片

private void Form1_Load(object sender, EventArgs e)
{
string[] imagepath = Directory.GetFiles(@"G:\image");
string[] filename=new string[imagepath.Length];
for (int i = ; i < imagepath.Length; i++)
{
string path = Path.GetFileNameWithoutExtension(imagepath[i]);
filename[i] = path+"\r\n";
}
listBox1.Items.AddRange(filename);
}
private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
int index = this.listBox1.SelectedIndex;
this.pictureBox1.Image = Image.FromFile(@"G:\image\" + index + ".jpg");
}

结果如下：

九.在messagebox消息框小时选择的listBox的内容

private void Form1_Load(object sender, EventArgs e)
{
string[] strs = {"","","" };
listBox1.Items.AddRange(strs);
}
private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
var selected= this.listBox1.SelectedItems;
foreach (var item in selected)
{
MessageBox.Show(item.ToString());
}
}

其运行结果如下：