## QrExtCodetextBuilder class

用于 QrEncodeMode 的 ExtendedCodetext 模式的 2D QR 条码的扩展代码文本生成器

使用 BarcodeGenerator 的 TwoDDisplayText 属性将可见文本设置为删除管理字符。

```csharp
public class QrExtCodetextBuilder : ExtCodetextBuilder
```

## 构造函数

| 姓名 | 描述 |
| --- | --- |
| [QrExtCodetextBuilder](qrextcodetextbuilder)() | 默认构造函数。 |

## 方法

| 姓名 | 描述 |
| --- | --- |
| [AddECICodetext](../../aspose.barcode.generation/extcodetextbuilder/addecicodetext)(ECIEncodings, string) | 添加带有扩展频道标识符的代码文本 |
| [AddFNC1FirstPosition](../../aspose.barcode.generation/qrextcodetextbuilder/addfnc1firstposition)() | 将 FNC1 添加到扩展代码文本项的第一个位置 |
| [AddFNC1GroupSeparator](../../aspose.barcode.generation/qrextcodetextbuilder/addfnc1groupseparator)() | 将组分隔符 (GS - '\\u001D') 添加到扩展代码文本 items |
| [AddFNC1SecondPosition](../../aspose.barcode.generation/qrextcodetextbuilder/addfnc1secondposition)(string) | 将 FNC1 添加到扩展代码文本项的第二个位置 |
| [AddPlainCodetext](../../aspose.barcode.generation/extcodetextbuilder/addplaincodetext)(string) | 将纯代码文本添加到扩展代码文本项 |
| virtual [Clear](../../aspose.barcode.generation/extcodetextbuilder/clear)() | 清除扩展代码文本项 |
| override [GetExtendedCodetext](../../aspose.barcode.generation/qrextcodetextbuilder/getextendedcodetext)() | 从扩展代码文本列表生成扩展代码文本。 |

### 例子

此示例展示了如何在扩展模式下使用 FNC1 第一个位置。

```csharp
[C#]
//创建代码文本
QrExtCodetextBuilder lTextBuilder = new QrExtCodetextBuilder();
lTextBuilder.AddFNC1FirstPosition();
lTextBuilder.AddPlainCodetext("000%89%%0");
lTextBuilder.AddFNC1GroupSeparator();
lTextBuilder.AddPlainCodetext("12345<FNC1>");

//生成代码文本
string lCodetext = lTextBuilder.GetExtendedCodetext();

//产生
using(BarcodeGenerator generator = new BarcodeGenerator(EncodeTypes.QR))
{
    generator.Parameters.Barcode.QR.QrEncodeMode = QREncodeMode.ExtendedCodetext;
    generator.Parameters.Barcode.QR.QrErrorLevel = QRErrorLevel.LevelL;
	generator.CodeText = lCodetext;
    generator.Parameters.Barcode.CodeTextParameters.TwoDDisplayText = "My Text";
	generator.Save("test.bmp");
}
```

这个示例展示了如何在扩展模式下使用 FNC1 第二个位置。

```csharp
[C#]
//创建代码文本
QrExtCodetextBuilder lTextBuilder = new QrExtCodetextBuilder();
TextBuilder.AddFNC1SecondPosition("12");
TextBuilder.AddPlainCodetext("TRUE3456"); 

//生成代码文本
string lCodetext = lTextBuilder.GetExtendedCodetext();

//产生
using(BarcodeGenerator generator = new BarcodeGenerator(EncodeTypes.QR))
{
    generator.Parameters.Barcode.QR.QrEncodeMode = QREncodeMode.ExtendedCodetext;
    generator.Parameters.Barcode.QR.QrErrorLevel = QRErrorLevel.LevelL;
	generator.CodeText = lCodetext;
    generator.Parameters.Barcode.CodeTextParameters.TwoDDisplayText = "My Text";
	generator.Save("test.bmp");
}
```

此示例展示了如何在扩展模式下使用多 ECI 模式。

```csharp
[C#]
//创建代码文本
QrExtCodetextBuilder lTextBuilder = new QrExtCodetextBuilder();
TextBuilder.AddECICodetext(ECIEncodings.Win1251, "Will");
TextBuilder.AddECICodetext(ECIEncodings.UTF8, "Right");
TextBuilder.AddECICodetext(ECIEncodings.UTF16BE, "Power");
TextBuilder.AddPlainCodetext(@"t\e\\st");   

//生成代码文本
string lCodetext = lTextBuilder.GetExtendedCodetext();

//产生
using(BarcodeGenerator generator = new BarcodeGenerator(EncodeTypes.QR))
{
    generator.Parameters.Barcode.QR.QrEncodeMode = QREncodeMode.ExtendedCodetext;
    generator.Parameters.Barcode.QR.QrErrorLevel = QRErrorLevel.LevelL;
	generator.CodeText = lCodetext;
    generator.Parameters.Barcode.CodeTextParameters.TwoDDisplayText = "My Text";
	generator.Save("test.bmp");
}
```

### 也可以看看

* class [ExtCodetextBuilder](../extcodetextbuilder)
* 命名空间 [Aspose.BarCode.Generation](../../aspose.barcode.generation)
* 部件 [Aspose.BarCode](../../)

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