当您有一个从 Forms 继承的 Class，然后让所有表单都从 Class 继承，然后尝试在 Visual Studio 中以设计模式加载表单时，是否有人遇到过问题？它是否正确加载，因为在我的上它显示“路径中的非法字符。”。我在调试模式下运行了 Visual Studio，发现它正在尝试检查我认为的文件的路径并获取通用定义的“>”。那么是否可以在 Windows 窗体上实现泛型，或者我是否必须为此找到解决方法，我已经在互联网上搜索了一些示例或线索，但可以找到任何重要的示例或线索。任何指针都将不胜感激，因为应用程序运行良好，但不是 Visual Studio 的设计模式。谢谢。
基类
public class BaseForm<T, TU> : Form, IFormLanguageStrings
where T : class
where TU : class
{
#region Variables
public IApplicationValues applicationValues;
public T businessObject;
public IEventBroker eventBroker;
private bool hasChangesToCommit = false;
public ILanguageManager languageManager;
public IMessageBox messageBox;
public TU objService;
public DatabaseOperationType operationType;
public event EventHandler OnNeedToCommitChanges;
#endregion
#region Constructors
/// <summary>
/// Initializes a new instance of the <see cref="BaseForm"/> class.
/// </summary>
public BaseForm()
{
Closing += BaseForm_Closing;
Load += BaseForm_Load;
if (IsInDesignMode) return;
SetService();
}
#endregion
#region Form Events
/// <summary>
/// Handles the Load event of the BaseForm control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
private void BaseForm_Load(object sender, EventArgs e)
{
if (IsInDesignMode) return;
SetLabels();
SetControls();
LoadCombos();
LoadDataForForm();
ValidateDataInput();
if (operationType == DatabaseOperationType.View)
{
eventBroker.Unregister(this);
DisableAllControls();
InvisibleSelectControls("BtnAction");
}
}
/// <summary>
/// Handles the Closing event of the BaseForm control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.ComponentModel.CancelEventArgs"/> instance containing the event data.</param>
private void BaseForm_Closing(object sender, CancelEventArgs e)
{
if (hasChangesToCommit)
{
if (
messageBox.ShowQuestion(languageManager.GetString("MSG_PerformPendingOperations"),
MessageBoxButton.YesNo, MessageBoxResult.No) == MessageBoxResult.Yes)
{
RaiseCommitChanges();
}
}
if (eventBroker != null)
eventBroker.Unregister(this);
}
#endregion
#region Virtual Methods
/// <summary>
/// Sets the labels.
/// </summary>
public virtual void SetLabels()
{
Controls.All().OfType<Control>().ToList().ForEach(
ctl =>
{
if (!string.IsNullOrEmpty(ctl.Name))
{
string label = languageManager.GetString(ctl.Name);
if (!string.IsNullOrEmpty(label))
{
ctl.Text = label;
}
if (ctl is ElementHost)
{
if (((ElementHost) ctl).Child is IFormLanguageStrings)
{
(((ElementHost) ctl).Child as IFormLanguageStrings).SetLabels();
}
}
}
});
}
/// <summary>
/// Sets the service.
/// </summary>
public virtual void SetService()
{
applicationValues = ServiceGateway.GetService<IApplicationValues>();
languageManager = ServiceGateway.GetService<ILanguageManager>();
messageBox = ServiceGateway.GetService<IMessageBox>();
eventBroker = ServiceGateway.GetService<IEventBroker>();
eventBroker.Register(this);
objService = ServiceGateway.GetService<TU>();
}
/// <summary>
/// Validates the data input.
/// </summary>
public virtual void ValidateDataInput()
{
}
/// <summary>
/// Determines whether [has to commit changes] [the specified commit].
/// </summary>
/// <param name="commit">if set to <c>true</c> [commit].</param>
public virtual void HasToCommitChanges(bool commit)
{
switch (operationType)
{
case DatabaseOperationType.Update:
hasChangesToCommit = commit;
break;
}
}
/// <summary>
/// Loads the combos.
/// </summary>
public virtual void LoadCombos()
{
}
/// <summary>
/// Loads the data for form.
/// </summary>
public virtual void LoadDataForForm()
{
}
/// <summary>
/// Sets the controls.
/// </summary>
public virtual void SetControls()
{
}
#endregion
#region Private Methods
/// <summary>
/// Raises the commit changes.
/// </summary>
private void RaiseCommitChanges()
{
if (OnNeedToCommitChanges != null)
{
OnNeedToCommitChanges(this, EventArgs.Empty);
}
}
/// <summary>
/// Closes the form.
/// </summary>
protected void CloseForm()
{
FireEventBroker(EventTopics.CloseMdiChild, new CloseMdiChildEventArgs(this));
}
/// <summary>
/// Enables or disable controls.
/// </summary>
/// <typeparam name="T">type of control</typeparam>
/// <param name="isEnable">if set to <c>true</c> [is enable].</param>
private void EnableDisableControls<TX>(bool isEnable) where TX : Control
{
Controls.All()
.OfType<TX>()
.ToList()
.ForEach(ctl => ctl.Enabled = isEnable);
}
/// <summary>
/// Visibles or invisible all controls.
/// </summary>
/// <param name="isVisible">if set to <c>true</c> [is visible].</param>
private void VisibleInvisibleAllControls(bool isVisible)
{
Controls.All()
.OfType<Control>()
.ToList()
.ForEach(ctl => ctl.Visible = isVisible);
}
#endregion
#region Public Methods
/// <summary>
/// Gets a value indicating whether this instance is in design mode.
/// </summary>
/// <value>
/// <c>true</c> if this instance is in design mode; otherwise, <c>false</c>.
/// </value>
public bool IsInDesignMode
{
get { return (Process.GetCurrentProcess().ProcessName == "devenv"); }
}
/// <summary>
/// Fires the event broker.
/// </summary>
/// <param name="eventTopic">The event topic.</param>
/// <param name="eventArgs">The <see cref="System.EventArgs"/> instance containing the event data.</param>
public void FireEventBroker(string eventTopic, EventArgs eventArgs)
{
eventBroker.Fire(eventTopic, this, eventArgs);
}
/// <summary>
/// Clears all bindings.
/// </summary>
public void ClearAllBindings()
{
Controls.All().OfType<Control>().ToList().ForEach(
ctl => { if (ctl.DataBindings.Count != 0) ctl.DataBindings.Clear(); });
}
/// <summary>
/// Enables all controls.
/// </summary>
public void EnableAllControls()
{
EnableDisableAllControls(true);
}
/// <summary>
/// Disables all controls.
/// </summary>
public void DisableAllControls()
{
EnableDisableAllControls(false);
}
/// <summary>
/// Enables or disable all controls.
/// </summary>
/// <param name="isEnable">if set to <c>true</c> [is enable].</param>
private void EnableDisableAllControls(bool isEnable)
{
Controls.All()
.OfType<Control>()
.ToList()
.ForEach(ctl => ctl.Enabled = isEnable);
}
/// <summary>
/// Enables all buttons.
/// </summary>
public void EnableAllButtons()
{
EnableDisableControls<Button>(true);
}
/// <summary>
/// Disables all buttons.
/// </summary>
public void DisableAllButtons()
{
EnableDisableControls<Button>(false);
}
/// <summary>
/// Enables all text boxes.
/// </summary>
public void EnableAllTextBoxes()
{
EnableDisableControls<TextBox>(true);
}
/// <summary>
/// Disables all text boxes.
/// </summary>
public void DisableAllTextBoxes()
{
EnableDisableControls<TextBox>(false);
}
/// <summary>
/// Enables the select controls.
/// </summary>
/// <param name="controlNames">The control names.</param>
public void EnableSelectControls(params string[] controlNames)
{
EnableDisableSelectedControls(true, controlNames);
}
/// <summary>
/// Disables the select controls.
/// </summary>
/// <param name="controlNames">The control names.</param>
public void DisableSelectControls(params string[] controlNames)
{
EnableDisableSelectedControls(false, controlNames);
}
/// <summary>
/// Enables or disable selected controls.
/// </summary>
/// <param name="isEnable">if set to <c>true</c> [is enable].</param>
/// <param name="controlNames">The control names.</param>
public void EnableDisableSelectedControls(bool isEnable, params string[] controlNames)
{
Controls.All()
.OfType<Control>()
.ToList()
.ForEach(ctl => { if (controlNames.Contains(ctl.Name)) ctl.Enabled = isEnable; });
}
/// <summary>
/// Visibles the select controls.
/// </summary>
/// <param name="controlNames">The control names.</param>
public void VisibleSelectControls(params string[] controlNames)
{
VisibleInvisibleSelectedControls(true, controlNames);
}
/// <summary>
/// Invisibles the select controls.
/// </summary>
/// <param name="controlNames">The control names.</param>
public void InvisibleSelectControls(params string[] controlNames)
{
VisibleInvisibleSelectedControls(false, controlNames);
}
/// <summary>
/// Visibles or invisible selected controls.
/// </summary>
/// <param name="isVisible">if set to <c>true</c> [is visible].</param>
/// <param name="controlNames">The control names.</param>
private void VisibleInvisibleSelectedControls(bool isVisible, params string[] controlNames)
{
Controls.All()
.OfType<Control>()
.ToList()
.ForEach(ctl => { if (controlNames.Contains(ctl.Name)) ctl.Visible = isVisible; });
}
/// <summary>
/// Visibles all controls.
/// </summary>
public void VisibleAllControls()
{
VisibleInvisibleAllControls(true);
}
/// <summary>
/// Invisibles all controls.
/// </summary>
public void InvisibleAllControls()
{
VisibleInvisibleAllControls(false);
}
#endregion
}
}