记录快捷键

#region 快捷键相关 
/// <summary> 
/// 记录快捷键 
/// </summary> 
private void txtHotKey_KeyDown(object sender, KeyEventArgs e) 
{ 
        int HotKeyValue = 0; 
        string HotKeyString = ""; 

        e.SuppressKeyPress = false; 
        e.Handled = true; 

        if (e.Modifiers != Keys.None) 
        { 
                switch (e.Modifiers) 
                { 
                        case Keys.Control: 
                                HotKeyString += "Ctrl + "; 
                                HotKeyValue = (int)e.Modifiers; 
                                break; 
                        case Keys.Alt: 
                                HotKeyString += "Alt + "; 
                                HotKeyValue = (int)e.Modifiers; 
                                break; 
                        case Keys.Shift: 
                                HotKeyString += "Shift + "; 
                                HotKeyValue = (int)e.Modifiers; 
                                break; 
                        case Keys.Control | Keys.Alt: 
                                HotKeyString += "Ctrl + Alt + "; 
                                HotKeyValue = (int)e.Modifiers; 
                                break; 
                        case Keys.Control | Keys.Shift: 
                                HotKeyString += "Ctrl + Shift + "; 
                                HotKeyValue = (int)e.Modifiers; 
                                break; 
                        case Keys.Alt | Keys.Shift: 
                                HotKeyString += "Alt + Shift + "; 
                                HotKeyValue = (int)e.Modifiers; 
                                break; 
                        case Keys.Control | Keys.Alt | Keys.Shift: 
                                HotKeyString += "Ctrl + Alt + Shift + "; 
                                HotKeyValue = (int)e.Modifiers; 
                                break; 
                } 
                if (e.KeyCode != Keys.None && e.KeyCode != Keys.ControlKey && e.KeyCode != Keys.Menu && e.KeyCode != Keys.ShiftKey) 
                { 
                        HotKeyString += KeyCodeToString(e.KeyCode); 
                        HotKeyValue += (int)e.KeyCode; 
                } 
        } 
        else 
        { 
                if (e.KeyCode == Keys.Delete || e.KeyCode == Keys.Back) 
                { 
                        HotKeyString = "无"; 
                        HotKeyValue = -1; 
                } 
                else if (e.KeyCode != Keys.None) 
                { 
                        HotKeyString = KeyCodeToString(e.KeyCode); 
                        HotKeyValue = (int)e.KeyCode; 
                } 
        } 

        if (HotKeyValue == 0) 
                HotKeyValue = -1; 

        TextBox txtHotKey = (TextBox)sender; 
        txtHotKey.Text = HotKeyString; 
        txtHotKey.Tag = HotKeyValue; 
        txtHotKey.SelectionStart = txtHotKey.Text.Length; 
} 

/// <summary> 
/// 将按键转换成相应字符 
/// </summary> 
/// <param name="KeyCode">按键</param> 
/// <returns>字符</returns> 
private string KeyCodeToString(Keys KeyCode) 
{ 
        if (KeyCode >= Keys.D0 && KeyCode <= Keys.D9) 
        { 
                return KeyCode.ToString().Remove(0, 1); 
        } 
        else if (KeyCode >= Keys.NumPad0 && KeyCode <= Keys.NumPad9) 
        { 
                return KeyCode.ToString().Replace("Pad", ""); 
        } 
        else 
        { 
                return KeyCode.ToString(); 
        } 
} 

/// <summary> 
/// 设置按键不响应 
/// </summary> 
private void txtHotKey_KeyPress(object sender, KeyPressEventArgs e) 
{ 
        e.Handled = true; 
} 

/// <summary> 
/// 释放按键后，若是无实际功能键，则置无 
/// </summary> 
private void txtHotKey_KeyUp(object sender, KeyEventArgs e) 
{ 
        CheckHotkey(sender); 
} 

/// <summary> 
/// 失去焦点后，若是无实际功能键，则置无 
/// </summary> 
private void txtHotKey_LostFocus(object sender, EventArgs e) 
{ 
        CheckHotkey(sender); 
} 

/// <summary> 
/// 检查是否无实际功能键，是则置无 
/// </summary> 
private void CheckHotkey(object sender) 
{ 
        TextBox txtHotKey = (TextBox)sender; 
        if (txtHotKey.Text.EndsWith(" + ") || String.IsNullOrEmpty(txtHotKey.Text)) 
        { 
                txtHotKey.Text = "无"; 
                txtHotKey.Tag = -1; 
                txtHotKey.SelectionStart = txtHotKey.Text.Length; 
        } 
} 
#endregion