携带多选基础资料的首项到基础资料字段（取基础资料属性）

多选基础资料字段不支持基础资料属性，因此无法像基础资料一样查看多选基础资料字段的属性值。

需求：在物料清单正查套打BOM版本的基础资料属性，但是由于BOM版本是多选基础资料，目前无法打印；

变通方案：通过通过DataChanged事件，携带多选基础资料的首项到基础资料上，再利用基础资料字段配置基础资料属性；

配置部分（配置一个同类型基础资料）：

表单插件：C#

public class SamplePlugIn : AbstractDynamicFormPlugIn

{

    private const string SrcMulBaseDataFieldKey = "FBomVersion";

    private const string TgtBaseDataFieldKey = "FPrintBase";

    public override void DataChanged(DataChangedEventArgs e)

    {

        if (e.Field == null)

            return;

        if (e.Field.Key.EqualsIgnoreCase(SrcMulBaseDataFieldKey))

        {

            var objCol = this.View.Model.GetValue(SrcMulBaseDataFieldKey) as DynamicObjectCollection;

            if (objCol == null || objCol.Count == 0 || objCol[0] == null)

            {

                this.View.Model.SetValue(TgtBaseDataFieldKey, null);

                this.View.UpdateView(TgtBaseDataFieldKey);

                return;

            }

            string propKey = objCol[0].DynamicObjectType.Name + "_Id";

            if (objCol[0].DynamicObjectType.Properties.ContainsKey(propKey))

            {

                object pkVal = objCol[0][propKey];

                this.View.Model.SetValue(TgtBaseDataFieldKey, pkVal);

            }

            else

            {

                this.View.Model.SetValue(TgtBaseDataFieldKey, null);

            }

            this.View.UpdateView(TgtBaseDataFieldKey);

        }

    }

}

python插件：

import clr

clr.AddReference('Kingdee.BOS')

clr.AddReference('Kingdee.BOS.Core')

clr.AddReference('Kingdee.BOS.App')

clr.AddReference('Kingdee.BOS.DataEntity')

from Kingdee.BOS import *

from Kingdee.BOS.Core import *

from Kingdee.BOS.Core.Bill import *

from Kingdee.BOS.Core.DynamicForm.PlugIn import *

from Kingdee.BOS.Core.DynamicForm.PlugIn.ControlModel import *

from System import *

from Kingdee.BOS.Orm.DataEntity import *

from Kingdee.BOS.App.Data import *

def DataChanged(e):

    if e.Field == None:

        return;

    srcFieldKey = 'FBomVersion';

    tgtFieldKey = 'FPrintBase';

    if not e.Field.Key.Equals(srcFieldKey,StringComparison.OrdinalIgnoreCase):

        return;

    objCol = this.View.Model.GetValue(srcFieldKey);

    if objCol == None or objCol.Count == 0 or objCol[0] == None:

        this.View.Model.SetValue(tgtFieldKey,None);

        this.View.UpdateView(tgtFieldKey);

        return;

    propKey = objCol[0].DynamicObjectType.Name+'_Id';

    if objCol[0].DynamicObjectType.Properties.ContainsKey(propKey):

        pkVal = objCol[0][propKey];

        this.View.Model.SetValue(tgtFieldKey,pkVal);

    else:

        this.View.Model.SetValue(tgtFieldKey,null);

    this.View.UpdateView(tgtFieldKey);