Windows 程式設計.ppt

控件和对话框设计Windows程序设计一般步骤对话框Dialog属性事件//Callthismethodfromtheconstructorofyourform
privatevoidOtherInitialize(){
this.Closing+=newCancelEventHandler(this.Form1_Closing);
//Exchangecommentedlineandnotethedifference.
this.isDataSaved=true;
//this.isDataSaved=false;
}

privatevoidForm1_Closing(Objectsender,CancelEventArgse){
if(!isDataSaved){
e.Cancel=true;
MessageBox.Show("Youmustsavefirst.");
}
else{
e.Cancel=false;
MessageBox.Show("Goodbye.");
}
}
方法Label控件Button控件TextBox控件ListBox控件常用事件
DoubleClick
SelectedIndexChanged
常用方法
ClearSelected
SetSelectedItems集合
常用属性：
Count
常用方法：
Add
RemoveAt
Insert
Clear
ComboBoxRadioButton控件CheckBox控件PictureBox控件GroupBox控件PanelTimer控件其他常用控件对话框返回值DialogResult枚举Button的DialogResult属性Form的DialogResult属性常用对话框MessageBoxMessageBoxButtons枚举MessageBoxIcon枚举通用对话框ColorDialogprivatevoidbutton1_Click(objectsender,System.EventArgse)
{
ColorDialogMyDialog=newColorDialog();

//Keepstheuserfromselectingacustomcolor.
MyDialog.AllowFullOpen=false;

//Allowstheusertogethelp.(Thedefaultisfalse.)
MyDialog.ShowHelp=true;

//Setstheinitialcolorselecttothecurrenttextcolor.
MyDialog.Color=textBox1.ForeColor;

//UpdatethetextboxcoloriftheuserclicksOK
if(MyDialog.ShowDialog()==DialogResult.OK)
textBox1.ForeColor=MyDialog.Color;
}
FontDialogprivatevoidbutton1_Click(objectsender,System.EventArgse)
{
FontDialogfontDialog1=newFontDialog();
fontDialog1.ShowColor=true;

fontDialog1.Font=textBox1.Font;
fontDialog1.Color=textBox1.ForeColor;

if(fontDialog1.ShowDialog()!=DialogResult.Cancel)
{
textBox1.Font=fontDialog1.Font;
textBox1.ForeColor=fontDialog1.Color;
}
}
OpenFileDialogprivatevoidbutton1_Click(objectsender,System.EventArgse)
{
OpenFileDialogopenFileDialog1=newOpenFileDialog();

openFileDialog1.InitialDirectory="c:\\";
openFileDialog1.Filter="txtfiles(*.txt)|*.txt|Allfiles(*.*)|*.*";
openFileDialog1.FilterIndex=2;
openFileDialog1.RestoreDirectory=true;

if(openFileDialog1.ShowDialog()==DialogResult.OK)
{
}
}
SaveFileDialogprivatevoidButton1_Click(System.Objectse