Basis Tags

Single tag, all codes are contained between ${ and }.

Variables

${variable} or $variable - plain variable. Outputs variable variable in current context

example：

var templateContent = "hello $name";
var template = Engine.CreateTemplate(templateContent);
template.Set("name","jntemplate");
var result = template.Render();
Assert.AreEqual("hello jntemplate", render);

Property & Field

${object.Property} or $object.Property - object property or field. Outputs property property in object

example 1：

var templateContent = "hello $model.Name";
var template = Engine.CreateTemplate(templateContent);
template.Set("model",new SiteInfo {  Name = "jntemplate" });
var result = template.Render();
Assert.AreEqual("hello jntemplate", render);

example 2(static property)：

var templateContent = "${DateTime.Now}";
var template = Engine.CreateTemplate(templateContent);
template.SetStaticType("DateTime", typeof(DateTime));
var result = template.Render();
Assert.AreEqual("str1str2", result);

WARNING

does not support access to anonymous object properties .

Function

${ function(parameter1,parameter2....) } or $function(parameter1,parameter2....)

• execute instance method
• execute static method
• execute delegate

example 1(instance method)：

var templateContent = "$fun.Test(\"hello\")";
var template = Engine.CreateTemplate(templateContent);
template.Set("fun", new TestHelper());
var result = template.Render();
Assert.AreEqual("input: hello", result);

example 2(static method)：

var templateContent = "${string.Concat(\"str1\",\"str2\")}";
var template = Engine.CreateTemplate(templateContent);
template.SetStaticType("string", typeof(string));
var result = template.Render();
Assert.AreEqual("str1str2", result);

example 3(delegate)：

var templateContent = "$add(8,-2)";
var template = Engine.CreateTemplate(templateContent);
template.Set<Func<int, int, int>>("add", (x, y) =>
{
    return x + y;
});
var result = template.Render();
Assert.AreEqual("6", result);

Index

${ array[index]} or $array[index] - Indexers are a syntactic convenience that enable you to create a class, struct, or interface that client applications can access as an array.

example 1（dict）：

var templateContent = "$dict[\"name\"]";
var template = Engine.CreateTemplate(templateContent);
var dic = new System.Collections.Generic.Dictionary<string, string>();
dic["name"] = "jntemplate";
dic["age"] = "1";
template.Set("dict",dict);
var result = template.Render();
Assert.AreEqual("jntemplate", render);

example 2（array）：

var templateContent = "$arr[0]";
var template = Engine.CreateTemplate(templateContent);
template.Set("arr",new int[] { 1, 2, 3 });
var result = template.Render();
Assert.AreEqual("1", render);

TIP

Applies to

v1.4.0+

Logic Expression

${ expression } - Logical expressions have the value true or false and are constructed with the seven relational operators >, <, >=, <=, ==, !=,|| and &&.

example

var templateContent = "${3==8}";
var template = Engine.CreateTemplate(templateContent);
var result = template.Render();
Assert.AreEqual("False", result);

Arithmetic Expression

${ expression } - An arithmetic expression is a syntactically correct combination of numbers, operators, parenthesis, and variables.

example

var templateContent = "${(8+2)*10)}";
var template = Engine.CreateTemplate(templateContent);
var result = template.Render();
Assert.AreEqual("100", result);

Boolean

${ true/false } - boolean tag have the value true or false

example

var templateContent = "${true}";
var template = Engine.CreateTemplate(templateContent);
var result = template.Render();
Assert.AreEqual("True", result);

End

${ end } or $end - Indicates the end of the tag.

see :for ,foreach or if.

Null

${null} - NULL objects. see : if.

Number

${number} - There are two kinds of numeric values, integers (whole numbers), and real or floating point numbers (numbers containing a decimal point).

example

var templateContent = "${65.2}";
var template = Engine.CreateTemplate(templateContent);
var result = template.Render();
Assert.AreEqual("True", result);

String

${ "string" } - string literals

example

var templateContent = "${\"this is string\"}";
var template = Engine.CreateTemplate(templateContent);
var result = template.Render();
Assert.AreEqual("this is string", render);