下載DevExpress v20.1完整版    DevExpress v20.1漢化資源獲取

DevExpress Winforms Controls 內(nèi)置140多個(gè)UI控件和庫(kù)，完美構(gòu)建流暢、美觀且易于使用的應(yīng)用程序。想要體驗(yàn)？點(diǎn)擊下載>>

本文包含重大的更改信息，這些更改信息可能會(huì)影響WinForms Data Editors命名控件中使用兩種未記錄方法的更改信息。

在v20.1版本中，DoFormatEditValue和DoParseEditValue（在XtraEditors命名空間中）將不再是虛擬的，并且不再可以被覆蓋。技術(shù)團(tuán)隊(duì)更是了兩個(gè)技術(shù)示例，如果您在應(yīng)用中使用此API，建議您在決定升級(jí)到v20.1時(shí)對(duì)代碼進(jìn)行同樣的更改。

先前的執(zhí)行：

protected override ConvertEditValueEventArgs DoFormatEditValue(object val)
protected override ConvertEditValueEventArgs DoParseEditValue(object val)

當(dāng)前實(shí)施：

protected override object DoFormatEditValue(object val, out bool handled)
protected override object DoParseEditValue(object val, out bool handled)

請(qǐng)注意，不建議您重寫這些新方法，請(qǐng)改用RaiseFormatEditValue和RaiseParseEditValue，這些方法引發(fā)相應(yīng)的編輯事件，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;
}
}
}

對(duì)于IRangeControlClient的自定義實(shí)現(xiàn)，您將需要用DevExpress.XtraEditors.RangeControlClientOrientation手動(dòng)替換System.Windows.Forms.Orientation類型。

對(duì)于調(diào)度程序控件，將所有出現(xiàn)的System.Windows.Forms.KeyEventArgs和System.Windows.Forms.MouseEventArgs類型替換為相應(yīng)的對(duì)應(yīng)變量：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) {
...
}
}

中國(guó)區(qū)首發(fā) · DevExpress v20.1新版發(fā)布會(huì)報(bào)名開啟，名額有限先到先得哦~

DevExpress技術(shù)交流群2：775869749      歡迎一起進(jìn)群討論

掃描關(guān)注DevExpress中文網(wǎng)微信公眾號(hào)，及時(shí)獲取最新動(dòng)態(tài)及最新資訊