C# TextBox事件是我們在開發中會碰到的具體的功能需求那麼如何使得想要的C# TextBox事件執行呢？那麼這裡就向你介紹具體的C# TextBox事件演示實例包括需求的實現希望對你有所幫助
C# TextBox事件具體的需求
◆界面要求定義個TEXTBOX分別是姓名地址職業年齡輸出內容個BUTTON
◆滿足條件
()用戶名不能為空
()年齡必須是一個大於或等於的數字
()職業必須是程序員或為空
()地址不能為空
C# TextBox事件實例實現
using System;
using SystemCollectionsGeneric; using SystemComponentModel;
using SystemData;
using SystemDrawing;
using SystemText;
using SystemWindowsForms;
namespace Chapter
{
public partial class Form : Form
{
public Form()
{
InitializeComponent();
thisbuttonEnabled = false;
thistextBoxTag = false;
thistextBoxTag = false;
thistextBoxTag = false;
thistextBoxTag = false;
thistextBoxValidating+= new SystemComponentModelCancelEventHandler( thistextboxEmpty_Validating);
thistextBoxValidating += new SystemComponentModelCancelEventHandler( thistextboxEmpty_Validating);
thistextBoxValidating+= new SystemComponentModelCancelEventHandler( thistextboxOccupation_Validating);
thistextBoxValidating += new SystemComponentModelCancelEventHandler( thistextboxEmpty_Validating);
thistextBoxTextChanged += new SystemEventHandler(thistextbox_TextChanged);
thistextBoxTextChanged += new SystemEventHandler(thistextbox_TextChanged);
thistextBoxTextChanged += new SystemEventHandler(thistextbox_TextChanged);
}
//C# TextBox事件 private void textboxOccupation_Validating( object sender SystemComponentModelCancelEventArgs e)
{
TextBox tb=(TextBox)sender;
if (tbTextCompareTo(Programmer) == ||tbTextLength==)
{
tbTag = true;
tbBackColor = SystemDrawingSystemColorsWindow;
}
else
{
tbTag = false;
tbBackColor = ColorRed;
}
ValidateOk();
}
//C# TextBox事件 private void textboxEmpty_Validating( object sender SystemComponentModelCancelEventArgs e)
{
TextBox tb = (TextBox)sender;
if (tbTextLength == )
{
tbBackColor = ColorRed;
tbTag = false;
}
else
{
tbBackColor = SystemDrawingSystemColorsWindow;
tbTag = true;
}
ValidateOk();
}
private void textboxAge_KeyPress( object sender KeyPressEventArgs e)
{
if ((eKeyChar < || eKeyChar > ) && eKeyChar != )
eHandled = true;
}
private void textbox_TextChanged( object sender SystemEventArgs e)
{
TextBox tb = (TextBox)sender;
if (tbTextLength == && tb!=textBox)
{
tbTag = false; tbBackColor = ColorRed;
}
else if (tb == thistextBox && (tbTextLength != && tbTextCompareTo(Programmer) != ))
{
tbTag = false;
}
//C# TextBox事件 else
{
tbTag = true;
tbBackColor = SystemColorsWindow;
}
ValidateOk();
}
private void ValidateOk()
{
thisbuttonEnabled = ((bool)(thistextBoxTag) && (bool)(thistextBoxTag) && (bool)(thistextBoxTag) && (bool)(thistextBoxTag));
}
private void button_Click( object sender EventArgs e)
{
string output;
//C# TextBox事件
output = Name: + thistextBoxText + ;
output += Address: + thistextBoxText + ;
output += Occupation: + thistextBoxText + ;
output += Age: + thistextBoxText + ;
thistextBoxText = output;
}
}
}
C# TextBox事件實現的具體實例就向你介紹到這裡希望對你了解和學習C# TextBox事件有所幫助
From:http://tw.wingwit.com/Article/program/net/201311/13291.html
