Kendo UI Grid控件的功能强大，这里将常用的一些功能总结一下。
在使用Gird控件显示数据时，如果数据列过多，会出现横向滚动条，很多情况下，我们希望某些列固定，这些列固定显示，不随滚动条发生变化。这时，可以在数据列上使用locked属性，比如，下面是使用mvvm定义grid的示例，编辑按钮被设置为固定列:
<div id="fieldgrid" class="grid"
data-role="grid"
data-sortable="true"
data-height="580"
data-toolbar="['create']"
data-bind="source: fieldSource"
data-editable='{"mode": "popup" }'
data-columns='[
{"field":"Name","title":"字段名称", "width": "120px"},
{"field":"Title","title":"字段说明", "width": "120px"},
{"field":"DataType","title":"字段类型","values":dsDataType, "width": "120px"},
{"field":"ControlType","title":"控件类型", "values":dsControlType, "width": "120px"},
{"field":"DefaultValue","title":"缺省值", "width": "120px"},
{"field":"Editable","title":"是否可编辑", "width": "80px"},
{"field":"Visible","title":"是否可见", "width": "80px"},
{"field":"DisplayOrder","title":"显示顺序", editor: numberEditor, "width": "80px"},
{"field":"IsCascade","title":"是否级联", "width": "80px"},
{"field":"CascadeSubField","title":"级联下级", "width": "120px"},
{"field":"CascadeParentField","title":"级联上级", "width": "120px"},
{"command": [ "edit", "destroy" ], "width": "180px","locked":"true"}
]'
data-scrollable="true">
需要注意的是，1）固定列总是显示在最左边，2）带有固定列网格在初始化过程时，必须是可见的。如果网格在初始化时不可以见，会出现不可预知的问题。比如这种的场景，如果网格在分页中，初始化时是不可见的，那么，界面可能是这样的：
Kendo UI Grid控件自带弹出窗编辑，只要在数据源中定义schema，就可以自动生成编辑界面，代码如下：
<div class="form container" id="divForm">
<div id="divGrid">
<div id="mygrid" class="grid"
data-role="grid"
data-sortable="true"
data-toolbar="['create']"
data-bind="source: dataSource"
data-editable='{"mode": "popup" }'
data-columns='[
{"field":"Id","title":"ID"},
{"field":"Name","title":"姓名"},
{"field":"Age","title":"年龄"},
{"field":"JoinDate","title":"入职日期","format": "{0:yyyy-MM-dd}"},
{"field":"Sex","title":"性别","template": "#if (Sex==1){# 女 #}else{# 男 #}# "},
{"field":"Married","title":"婚姻状况","template": "#if (Married){# 已婚 #}else{# 未婚 #}# "},
{"command": [ "edit", "destroy" ], "filterable": false, "sortable": false, "width:": "240px"}
]'
data-scrollable="false">
</div>
</div>
</div>
<script>
$(document).ready(function () {
var viewModel = kendo.observable({
dsSex: [{ value: 0, text: '男' }, { value: 1, text: '女' }],
dataSource: new kendo.data.DataSource(
{
data: [],
schema: {
model: {
id: "Id",
fields: {
Id: { editable: true, nullable: false },
Name: { validation: { required: true } },
Age: { type: "number" },
Sex: { editable: true },
JoinDate: { type: "date", editable: true },
Married: { type: "boolean", editable: true }
}
}
}
})
});
kendo.bind($("#divForm"), viewModel);
});
</script>
自动生成的编辑界面对于基本数据类型的字段够用了，但在实际中，会有更复杂的要求，比如，某些字段需要使用下拉框或者更复杂的控件，或者我们希望字段多列排列，这时，需要用到自定义的模板，上面的网格的自定义编辑模板如下：
<script id="popup_editor" type="text/x-kendo-template">
<div class="form container">
<div class="form-group row">
<label class="col-sm-2 control-label" for="Id">ID</label>
<div class="col-sm-4">
<input type='number' class='k-textbox' data-bind="value: Id" />
<span class="k-invalid-msg" data-for="Id"></span>
</div>
<!--</div>
<div class="form-group row">-->
<label class="col-sm-2" for="Name">姓名</label>
<div class="col-sm-4 ">
<input type='text' name="Name" class='k-input k-textbox k-valid' data-bind="value: Name" required="required" />
<span class="k-invalid-msg" data-for="Name"></span>
</div>
</div>
<div class="form-group row">
<label class="col-sm-2 control-label" for="Age">年龄</label>
<div class="col-sm-4">
<input type='number' style="" data-role="numerictextbox" class='form-control' data-bind="value: Age" />
<span class="k-invalid-msg" data-for="Age"></span>
</div>
</div>
<div class="form-group row">
<label class="col-sm-2 control-label" for="val_JoinDate">参加日期</label>
<div class="col-sm-4">
<input data-role="datepicker" data-culture="zh-CN" style="" class='form-control' data-bind="value: JoinDate," />
<span class="k-invalid-msg" data-for="JoinDate"></span>
</div>
</div>
<div class="form-group row">
<label class="col-sm-2 control-label" for="val_Married">已婚</label>
<div class="col-sm-4">
<input type="checkbox" style="" data-bind="checked: Married," />
<span class="k-invalid-msg" data-for="Married"></span>
</div>
</div>
<div class="form-group row">
<label class="col-sm-2 control-label" for="val_Sex">性别</label>
<div class="col-sm-4">
<select data-role="dropdownlist" class='form-control' data-text-field="text"
data-value-field="value" data-bind="source:dsSex,value: Sex">
</select>
<span class="k-invalid-msg" data-for="Sex"></span>
</div>
</div>
</div>
</script>
模板使用script标记，类型为text/x-kendo-template，说明是kendo的模板。模板语言就是html，其中的data标记与kendo MVVM一致。模板中有几点需要注意：
<style>
.k-edit-form-container {
width: 700px;
}
.k-edit-form-container div {
box-sizing: border-box;
}
.k-edit-form-container label {
box-sizing: border-box;
}
</style>
需要将相关元素的box-sizing 设置为border-box
KendoUI Grid支持在网格行中显示该行数据的详细信息，示例界面如下：
详细信息部分是在Grid控件的detailInit事件中创建的，如果采用mvvm方式定义，示例代码如下：
<div id="functiongrid" class="grid"
data-role="grid"
data-sortable="true"
data-toolbar="['create']"
data-bind="source: functionSource, events: { dataBound: fn_dataBound }"
data-editable='{"mode": "popup" }'
data-detail-init="viewModel.functiongrid_detailInit"
data-detail-template='functiongridsubtemp'
data-columns='[
{"field":"FunctionName","title":"名称"},
{"field":"Desc","title":"说明"},
{"field":"ExecuteUrl","title":"地址"},
{"field":"ViewName","title":"函数类型名"},
{"command": [ "edit", "destroy" ], "filterable": false, "sortable": false, "width:": "240px"}
]'
data-scrollable="false"
>
</div>
上面的代码中，detailInit事件需要写为mvvm的方式，也就是需要用data开头，不同的单词中间用“-”分隔，全部为小写，这样，detailInit就需要写为data-detail-init。这个事件定义的函数在视图模型中,还有一个需要定义的属性是detailTemplate,用于定义显示模板,相关部分的代码如下：
functiongrid_detailInit: function (e) {
e.detailRow.find(".functionTab").kendoTabStrip(
{
animation: {
open: {
effects: "fadeIn"
}
}
}
);
if (!e.data.InParas) e.data.InParas = [];
if (!e.data.OutParas) e.data.OutParas = [];
if (!e.data.ExProps) e.data.ExProps = [];
var dsIn = new kendo.data.DataSource({
data: e.data.InParas,
schema: {
model: {
id: "FieldName",
fields: {
FieldName: { editable: true, validation: { required: true } },
ParaName: { editable: true, validation: { required: true } }
}
}
}
});
e.detailRow.find(".inparagrid").kendoGrid({
dataSource: dsIn,
editable: "popup",
toolbar: ['create'],
columns: [{
title: "字段名称",
field: "FieldName"
}, {
title: "Api参数名",
field: "ParaName"
}, {
command: ["edit", "destroy"]
}
]
});
var dsOut = new kendo.data.DataSource({
data: e.data.OutParas,
schema: {
model: {
id: "FieldName",
fields: {
FieldName: { editable: true, validation: { required: true } },
ParaName: { editable: true, validation: { required: true } }
}
}
}
});
e.detailRow.find(".outparagrid").kendoGrid({
dataSource: dsOut,
editable: "popup",
toolbar: ['create'],
columns: [{
title: "字段名称",
field: "FieldName"
}, {
title: "Api参数名",
field: "ParaName"
}, {
command: ["edit", "destroy"]
}
]
});
var dsEx = new kendo.data.DataSource({
data: e.data.ExProps,
schema: {
model: {
id: "PropName",
fields: {
PropName: { editable: true, validation: { required: true } },
PropValue: { editable: true, validation: { required: true } }
}
}
}
});
e.detailRow.find(".expropgrid").kendoGrid({
dataSource: dsEx,
editable: "popup",
toolbar: ['create'],
columns: [{
title: "属性名称",
field: "PropName"
}, {
title: "属性值",
field: "PropValue"
}, {
command: ["edit", "destroy"]
}
]
});
},
还要定义绑定函数如下：
fn_dataBound: function (e) {
e.sender.expandRow(e.sender.tbody.find("tr.k-master-row").first());
}
模板的定义如下：
<script id="functiongridsubtemp" type="text/x-kendo-template">
<div class="functionTab">
<ul>
<li >输入参数</li>
<li>输出参数</li>
<li>附加属性</li>
</ul>
<div>
<div class='inparagrid'></div>
</div>
<div>
<div class='outparagrid'></div>
</div>
<div>
<div class='expropgrid'></div>
</div>
</div>
</script>
这个模板相对复杂，在一个分页控件中显示三个网格，用于显示函数的输入参数、输出参数和附加参数。需要注意的是，模板中不能用id进行标记，因为在页面中，每一行都需要使用模板创建一组元素，在模板中定义id，不能保证id唯一。因此在函数中，需要使用class来获取相关的元素。
如果在Grid弹出窗中有下拉框控件，可以使用values属性直接绑定到数组，在弹出编辑窗中自动生成下拉框，示例代码如下：
<div id="fieldgrid" class="grid"
data-role="grid"
data-sortable="true"
data-toolbar="['create']"
data-bind="source: fieldSource"
data-editable='{"mode": "popup" }'
data-columns='[
{"field":"Name","title":"字段名称"},
{"field":"Title","title":"字段说明"},
{"field":"DataType","title":"字段类型","values":dsDataType},
{"field":"ControlType","title":"控件类型", "values":dsControlType},
{"field":"DefaultValue","title":"缺省值"},
{"field":"Editable","title":"是否可编辑"},
{"field":"Visible","title":"是否可见"},
{"field":"DisplayOrder","title":"显示顺序", editor: numberEditor},
{"field":"IsCascade","title":"是否级联"},
{"field":"CascadeSubField","title":"级联下级"},
{"field":"CascadeParentField","title":"级联上级"},
{"command": [ "edit", "destroy" ], "filterable": false, "sortable": false, "width:": "240px"}
]'
data-scrollable="false">
上面的代码使用了mvvm的定义模式，其中DataType和ControlType字段的values绑定到数组，数组定义示例如下:
var dsDataType = [
{ value: 'number', text: '数值' },
{ value: 'string', text: '字符串' },
{ value: 'date', text: '日期' },
{ value: 'boolean', text: '布尔' }];
var dsControlType = [
{ value: 'InputNumber', text: '数字输入' },
{ value: 'InputText', text: '文本输入' },
{ value: 'DatePicker', text: '日期输入' },
{ value: 'Checkbox', text: '单选框' },
{ value: 'Selection', text: '下拉框' },
{ value: 'ComboBox', text: '级联下拉框' }
];
数组定义时值字段名为value，显示字段名为text。在弹出编辑窗中，会自动创建为下拉框，显示结果如下：
使用这种方法，就不需要为下拉框定制显示控件了。
Kendo UI Grid控件自带弹出窗编辑，只要在数据源中定义schema，就可以自动生成编辑界面，代码如下：
<div class="form container" id="divForm">
<div id="divGrid">
<div id="mygrid" class="grid"
data-role="grid"
data-sortable="true"
data-toolbar="['create']"
data-bind="source: dataSource"
data-editable='{"mode": "popup" }'
data-columns='[
{"field":"Id","title":"ID"},
{"field":"Name","title":"姓名"},
{"field":"Age","title":"年龄"},
{"field":"JoinDate","title":"入职日期","format": "{0:yyyy-MM-dd}"},
{"field":"Sex","title":"性别","template": "#if (Sex==1){# 女 #}else{# 男 #}# "},
{"field":"Married","title":"婚姻状况","template": "#if (Married){# 已婚 #}else{# 未婚 #}# "},
{"command": [ "edit", "destroy" ], "filterable": false, "sortable": false, "width:": "240px"}
]'
data-scrollable="false">
</div>
</div>
</div>
<script>
$(document).ready(function () {
var viewModel = kendo.observable({
dsSex: [{ value: 0, text: '男' }, { value: 1, text: '女' }],
dataSource: new kendo.data.DataSource(
{
data: [],
schema: {
model: {
id: "Id",
fields: {
Id: { editable: true, nullable: false },
Name: { validation: { required: true } },
Age: { type: "number" },
Sex: { editable: true },
JoinDate: { type: "date", editable: true },
Married: { type: "boolean", editable: true }
}
}
}
})
});
kendo.bind($("#divForm"), viewModel);
});
</script>
自动生成的编辑界面对于基本数据类型的字段够用了，但在实际中，会有更复杂的要求，比如，某些字段需要使用下拉框或者更复杂的控件，或者我们希望字段多列排列，这时，需要用到自定义的模板，上面的网格的自定义编辑模板如下：
<script id="popup_editor" type="text/x-kendo-template">
<div class="form container">
<div class="form-group row">
<label class="col-sm-2 control-label" for="Id">ID</label>
<div class="col-sm-4">
<input type='number' class='k-textbox' data-bind="value: Id" />
<span class="k-invalid-msg" data-for="Id"></span>
</div>
<!--</div>
<div class="form-group row">-->
<label class="col-sm-2" for="Name">姓名</label>
<div class="col-sm-4 ">
<input type='text' name="Name" class='k-input k-textbox k-valid' data-bind="value: Name" required="required" />
<span class="k-invalid-msg" data-for="Name"></span>
</div>
</div>
<div class="form-group row">
<label class="col-sm-2 control-label" for="Age">年龄</label>
<div class="col-sm-4">
<input type='number' style="" data-role="numerictextbox" class='form-control' data-bind="value: Age" />
<span class="k-invalid-msg" data-for="Age"></span>
</div>
</div>
<div class="form-group row">
<label class="col-sm-2 control-label" for="val_JoinDate">参加日期</label>
<div class="col-sm-4">
<input data-role="datepicker" data-culture="zh-CN" style="" class='form-control' data-bind="value: JoinDate," />
<span class="k-invalid-msg" data-for="JoinDate"></span>
</div>
</div>
<div class="form-group row">
<label class="col-sm-2 control-label" for="val_Married">已婚</label>
<div class="col-sm-4">
<input type="checkbox" style="" data-bind="checked: Married," />
<span class="k-invalid-msg" data-for="Married"></span>
</div>
</div>
<div class="form-group row">
<label class="col-sm-2 control-label" for="val_Sex">性别</label>
<div class="col-sm-4">
<select data-role="dropdownlist" class='form-control' data-text-field="text"
data-value-field="value" data-bind="source:dsSex,value: Sex">
</select>
<span class="k-invalid-msg" data-for="Sex"></span>
</div>
</div>
</div>
</script>
模板使用script标记，类型为text/x-kendo-template，说明是kendo的模板。模板语言就是html，其中的data标记与kendo MVVM一致。模板中有几点需要注意：
<style>
.k-edit-form-container {
width: 700px;
}
.k-edit-form-container div {
box-sizing: border-box;
}
.k-edit-form-container label {
box-sizing: border-box;
}
</style>
需要将相关元素的box-sizing 设置为border-box
上节介绍了创建自定义的弹出编辑窗体，这种方法的好处是可以完全控制编辑窗体中的各个控件，但也有些麻烦，如果只需要修改其中的几个控件，完全重写一个编辑窗体就显得没有必要了。这时，可以为单个编辑控件进行定制。示例代码如下：
<div id="commandgrid" class="grid"
data-role="grid"
data-sortable="true"
data-toolbar="['create']"
data-bind="source: commandSource"
data-editable='{"mode": "popup" }'
data-columns='[
{"field":"Name","title":"名称"},
{"field":"Title","title":"文本"},
{"field":"FunctionName","title":"函数名称"},
{"field":"DisplayOrder","title":"显示顺序", editor: numberEditor},
{"command": [ "edit", "destroy" ], "filterable": false, "sortable": false, "width:": "240px"}
]'
data-scrollable="false">
</div>
上面的代码使用了mvvm的定义方式，其中DisplayOrder字段使用了自定义的editor，numberEditor是一个自定义的函数，在这个函数里创建自定义的控件并添加到container中：
function numberEditor(container, options) {
$('<input name="' + options.field + '"/>')
.appendTo(container)
.kendoNumericTextBox({
format:"n0"
});
}
这里定义了数字输入的格式，不显示小数。
在网格显示时，经常需要设置条件，根据网格中的数据，改变网格或者所在行的显示属性。比如如果数据超过某个限度，需要显示报警颜色。这些需求包括当满足一定条件时：
在Kendo Grid的dataBound事件中，可以实现上述功能。 示例代码如下：
dataBound: function (e) {
var rows = e.sender.tbody.children();
for (var j = 0; j < rows.length; j++) {
var row = $(rows[j]);
var dataItem = e.sender.dataItem(row);
var age = dataItem.get("AGE");
var cells = row.children();
if (age > 15) {
for (var idx = 0; idx < cells.length; idx++) {
var mytd = cells[idx];
cells[idx].bgColor = "green"; //设置行背景颜色
}
}
if (age < 15) {
for (var idx = 0; idx < cells.length; idx++) {
var mytd = cells[idx];
if (idx == 0) {
var chk = mytd.children[0];
$(chk).prop("checked", true); //设置选择框
}
$(mytd).css("font-weight", "bold"); //设置字体
$(mytd).css("color", "red");//设置字体颜色
$(mytd).css("text-decoration", "line-through");//加删除线
$(mytd).height(100);//设置行高
}
}
}
}
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