C# DEV treeList 将数据展示为树形

今天药忘吃喽~ 2023-02-21 04:56 9阅读 0赞

**1.首先看数据**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk3Njg5MA_size_16_color_FFFFFF_t_70]  
**2.界面的设置**

只绑定一列，绑定的是salesman字段  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk3Njg5MA_size_16_color_FFFFFF_t_70 1]  
**3.代码的数据处理**

List<CustyeslsCx> item = new List<CustyeslsCx>();
                                foreach (CustyeslsCx CC in ret.data.custyeslsCxes;)
                                { 
                                    foreach (CustyeslsCx y in CC.items)
                                    { 
                                        if (y.deptname == CC.deptname)
                                        { 
                                            item.Add(y);
                                            //字符串拼接，作为唯一键
                                            y.salesmanConcat = y.salesmanConcat + ":"+ y.dcode;
                                            y.parentCode = y.deptname;
                                            y.keyName = y.salesmanConcat;
    
                                        }      
                                    }
                                    CC.keyName = CC.deptname;
                                    CC.parentCode = CC.dcode;
                                    CC.salesmanConcat = CC.dcode;
                                    //这里因为是单树形结构，这里绑定的只是display
                                    CC.salesman = CC.deptname;
                                    item.Add(CC);
                                }
                                this.treeList1.DataSource = item;
                                this.treeList1.ParentFieldName = "parentCode";
                                this.treeList1.KeyFieldName = "keyName";
                                this.treeList1.PreviewFieldName = "salesmanConcat";
                                this.treeList1.CollapseAll();//合起全部，默认会打开第一个父标签

**4.这里比较重要的是**  
处理数据，要把数据整理成平级  
ParentFieldName 是父级字段  
PreviewFieldName 是子级字段  
KeyFieldName 是唯一标识，不可重复

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