下载DevExpress v20.1完整版 DevExpress v20.1汉化资源获取
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本文包含重大的更改信息,这些更改信息可能会影响WinForms Data Editors命名控件中使用两种未记录方法的更改信息。
在v20.1版本中,DoFormatEditValue和DoParseEditValue(在XtraEditors命名空间中)将不再是虚拟的,并且不再可以被覆盖。技术团队更是了两个技术示例,如果您在应用中使用此API,建议您在决定升级到v20.1时对代码进行同样的更改。
先前的执行:
protected override ConvertEditValueEventArgs DoFormatEditValue(object val)
protected override ConvertEditValueEventArgs DoParseEditValue(object val)
当前实施:
protected override object DoFormatEditValue(object val, out bool handled)
protected override object DoParseEditValue(object val, out bool handled)
请注意,不建议您重写这些新方法,请改用RaiseFormatEditValue和RaiseParseEditValue,这些方法引发相应的编辑事件,不太可能再次更改。
//version 19.2 and older
protected override ConvertEditValueEventArgs DoFormatEditValue(object val) {
ConvertEditValueEventArgs result = base.DoFormatEditValue(val);
result.Value = MyFormatEditValue(result.Value);
result.Handled = true;
return result;
}
protected override ConvertEditValueEventArgs DoParseEditValue(object val) {
ConvertEditValueEventArgs result = base.DoParseEditValue(val);
result.Value = MyParseEditValue(result.Value);
result.Handled = true;
return result;
}
//version 20.1 and newer
protected override void RaiseFormatEditValue(ConvertEditValueEventArgs e) {
base.RaiseFormatEditValue(e);D
e.Value = MyFormatEditValue(e.Value);
e.Handled = true;
}
protected override void RaiseParseEditValue(ConvertEditValueEventArgs e) {
base.RaiseParseEditValue(e);
e.Value = MyParseEditValue(e.Value);
e.Handled = true;
}
//Version 19.2 and older
protected override ConvertEditValueEventArgs DoFormatEditValue(object val) {
if(val is int) {
switch((int)val) {
case 0: return new ConvertEditValueEventArgs("zero");
case 1: return new ConvertEditValueEventArgs("one");
case 2: return new ConvertEditValueEventArgs("two");
case 3: return new ConvertEditValueEventArgs("three");
}
}
return base.DoFormatEditValue(val);
}
protected override ConvertEditValueEventArgs DoParseEditValue(object val) {
if(val is string) {
switch((string)val) {
case "zero": return new ConvertEditValueEventArgs(0);
case "one": return new ConvertEditValueEventArgs(1);
case "two": return new ConvertEditValueEventArgs(2);
case "three": return new ConvertEditValueEventArgs(3);
}
}
return base.DoParseEditValue(val);
}
//Version 20.1 and newer
protected override void RaiseFormatEditValue(ConvertEditValueEventArgs e) {
base.RaiseFormatEditValue(e);
if(e.Value is int) {
e.Handled = true;
switch((int)e.Value) {
case 0: e.Value = "zero"; break;
case 1: e.Value = "one"; break;
case 2: e.Value = "two"; break;
case 3: e.Value = "three"; break;
}
}
}
protected override void RaiseParseEditValue(ConvertEditValueEventArgs e) {
base.RaiseParseEditValue(e);
if(e.Value is string) {
e.Handled = true;
switch((string)e.Value) {
case "zero": e.Value = 0; break;
case "one": e.Value = 1; break;
case "two": e.Value = 2; break;
case "three": e.Value = 3; break;
}
}
}
对于IRangeControlClient的自定义实现,您将需要用DevExpress.XtraEditors.RangeControlClientOrientation手动替换System.Windows.Forms.Orientation类型。
对于调度程序控件,将所有出现的System.Windows.Forms.KeyEventArgs和System.Windows.Forms.MouseEventArgs类型替换为相应的对应变量:DevExpress.Portable.Input.PortableKeyEventArgs和DevExpress.Portable.Input.PortableMouseEventArgs。
// Version 19.2 and earlier
public class MyKeyboardHandlerService : KeyboardHandlerServiceWrapper {
public override void OnKeyDown(KeyEventArgs e) {
...
}
}
public class MyMouseHandlerService : MouseHandlerServiceWrapper {
public override void OnMouseWheel(MouseEventArgs e) {
...
}
}
// Version 20.1 and newer
public class MyKeyboardHandlerService : KeyboardHandlerServiceWrapper {
public override void OnKeyDown(PortableKeyEventArgs e) {
...
}
}
public class MyMouseHandlerService : MouseHandlerServiceWrapper {
public override void OnMouseWheel(PortableMouseEventArgs e) {
...
}
}
中国区首发 · DevExpress v20.1新版发布会报名开启,名额有限先到先得哦~
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