DevExpress GridView-单元格/列的自定义筛选功能
如何为列或单元格定义自定义筛选函数?作为一个例子,假设我们有一个文本值,并且在标题中有一个搜索输入 如何告诉gridview调用函数DevExpress GridView-单元格/列的自定义筛选功能,devexpress,devextreme,devextreme-angular,Devexpress,Devextreme,Devextreme Angular,如何为列或单元格定义自定义筛选函数?作为一个例子,假设我们有一个文本值,并且在标题中有一个搜索输入 如何告诉gridview调用函数 class组件{ 受保护的doSomeFilter(值:字符串,搜索查询:字符串){ if(某些条件(值、搜索查询)){ 返回true; } 返回false; } } 我希望这样使用它: 但是GridView不支持customFilter方法,并且没有类似的功能。你知道如何在devexpress中实现这种定制过滤吗?看起来很简单,但我已经为此奋斗了好几个小
class组件{
受保护的doSomeFilter(值:字符串,搜索查询:字符串){
if(某些条件(值、搜索查询)){
返回true;
}
返回false;
}
}
我希望这样使用它:
但是GridView不支持
customFilter
方法,并且没有类似的功能。你知道如何在devexpress中实现这种定制过滤吗?看起来很简单,但我已经为此奋斗了好几个小时。提前感谢。此示例演示如何使用过滤器面板过滤数据。可以使用其复选框启用/禁用当前过滤器表达式,然后单击此表达式打开集成过滤器生成器。请注意,对它所做的更改反映在筛选器行和标题筛选器中,反之亦然,从()开始,请参见以下内容:
$("#gridContainer").dxDataGrid({
dataSource: orders,
columnsAutoWidth: true,
filterRow: { visible: true },
filterPanel: { visible: true },
headerFilter: { visible: true },
filterValue: [["Employee", "=", "Clark Morgan"], "and", ["OrderDate", "weekends"]],
filterBuilder: {
customOperations: [{
name: "weekends",
caption: "Weekends",
dataTypes: ["date"],
icon: "check",
hasValue: false,
calculateFilterExpression: function() {
return [[getOrderDay, "=", 0], "or", [getOrderDay, "=", 6]];
}
}]
},
filterBuilderPopup: {
position: { of: window, at: "top", my: "top", offset: { y: 10 } },
},
scrolling: { mode: "infinite" },
showBorders: true,
columns: [{
caption: "Invoice Number",
dataField: "OrderNumber",
dataType: "number",
headerFilter: {
groupInterval: 10000
}
}, {
dataField: "OrderDate",
dataType: "date"
}, {
dataField: "SaleAmount",
dataType: "number",
format: "currency",
editorOptions: {
format: "currency",
showClearButton: true
},
headerFilter: {
dataSource: [ {
text: "Less than $3000",
value: ["SaleAmount", "<", 3000]
}, {
text: "$3000 - $5000",
value: [["SaleAmount", ">=", 3000], ["SaleAmount", "<", 5000]]
}, {
text: "$5000 - $10000",
value: [["SaleAmount", ">=", 5000], ["SaleAmount", "<", 10000]]
}, {
text: "$10000 - $20000",
value: [["SaleAmount", ">=", 10000], ["SaleAmount", "<", 20000]]
}, {
text: "Greater than $20000",
value: ["SaleAmount", ">=", 20000]
}]
}
}, {
dataField: "Employee",
dataType: "string"
}, {
caption: "City",
dataField: "CustomerInfo.StoreCity",
dataType: "string"
}, {
caption: "State",
dataField: "CustomerInfo.StoreState",
dataType: "string"
}]
});
另请参阅此链接(dxDataGrid-如何实现日期字段的自定义筛选器):
有关DevExtreme的演示,请参见以下内容:
谢谢,但仍然不清楚如何使用我的
doSomeFilter
方法?
$("#gridContainer").dxDataGrid({
dataSource: employees,
filterRow: {
visible: true,
applyFilter: "auto"
},
groupPanel:{
visible: true
},
searchPanel: {
visible: true,
width: 240,
placeholder: "Search..."
},
headerFilter: {
visible: true
},
paging: {
enabled: false
},
editing: {
mode: "form",
allowUpdating: true
},
columns: [
{
dataField: "Prefix",
caption: "Title",
width: 70
},
"FirstName",
"LastName", {
dataField: "Position",
width: 170
}, {
dataField: "StateID",
caption: "State",
width: 125,
lookup: {
dataSource: states,
displayExpr: "Name",
valueExpr: "ID"
}
}, {
dataField: "BirthDate",
dataType: "date"
}
]
});