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SheetDropDownList.cs
资源名称：H3_OA.rar　[点击查看]
上传用户：li2971742
上传日期：2021-11-18
资源大小：39096k
文件大小：7k
源码类别：

OA系统

开发平台：

C#

SheetDropDownList.cs：源码内容
  1. using System;
  2. using System.Web.UI;
  3. using System.Web.UI.WebControls;
  4. using System.ComponentModel;
  5. using System.Drawing;
  6. using System.Web.UI.Design;
  7. using System.Drawing.Design;
  9. [assembly:TagPrefix("OThinker.H3.WorkSheet","SheetControls")]
  10. namespace OThinker.H3.WorkSheet
  11. {
  12. /// <summary>
  13. /// 表单下拉框
  14. /// </summary>
  15. [ToolboxBitmap(typeof(SheetDropDownList),"OThinker.H3.WorkSheet.SheetDropDownList.bmp")]
  16. [ToolboxData("<{0}:SheetDropDownList runat=server></{0}:SheetDropDownList>")]
  17. public class SheetDropDownList : System.Web.UI.WebControls.DropDownList, ISheetControl
  18. {
  19. public SheetDropDownList()
  20. {
  22. }
  24.         private RenderType _RenderType = RenderType.LabelWhenDisable;
  25.         /// <summary>
  26.         /// 显示方式
  27.         /// </summary>
  28.         [Bindable(true), Category("WorkSheet"), Description("控制控件的显示方式")]
  29.         public RenderType RenderType
  30.         {
  31.             get
  32.             {
  33.                 return this._RenderType;
  34.             }
  35.             set
  36.             {
  37.                 this._RenderType = value;
  38.             }
  39.         }
  41.         #region SheetDropDownList属性
  43.         private string _DataField = null;
  44.         [Bindable(true), Category("WorkSheet"), DefaultValue("")]
  45.         [Editor(typeof(DataSelector), typeof(UITypeEditor))]
  46.         public string DataField
  47.         {
  48.             get
  49.             {
  50.                 return this._DataField;
  51.             }
  52.             set
  53.             {
  54.                 this._DataField = value;
  55.             }
  56.         }
  58.         private string _SourceDataField = null;
  59.         [Bindable(true), Category("WorkSheet"), DefaultValue("")]
  60.         [Editor(typeof(DataSelector), typeof(UITypeEditor))]
  61.         public string SourceDataField
  62.         {
  63.             get
  64.             {
  65.                 return this._SourceDataField;
  66.             }
  67.             set
  68.             {
  69.                 this._SourceDataField = value;
  70.             }
  71.         }
  73.         #endregion
  75.         #region ISheetControl 成员
  77.         public virtual void LoadDataField(OThinker.H3.WorkSheet.SheetPage SheetPage)
  78.         {
  79.             if (this.SourceDataField == null || this.SourceDataField == "")
  80.             {
  81.             }
  82.             else if (SheetPage.Enviroment.InstanceData[this.SourceDataField] == null)
  83.             {
  85.             }
  86.             else
  87.             {
  88.                 object source = SheetPage.Enviroment.InstanceData[this.SourceDataField].Value;
  89.                 if (source != null)
  90.                 {
  91.                     this.DataSource = source;
  92.                     this.DataBind();
  93.                 }
  94.             }
  96.             if (this.DataField == null || this.DataField == "")
  97.             {
  98.             }
  99.             else if (SheetPage.Enviroment.InstanceData[this.DataField] == null)
  100.             {
  102.             }
  103.             else if (SheetPage.Enviroment.InstanceData[this.DataField].Visible == false)
  104.             {
  105.                 this.Visible = false;
  106.             }
  107.             else
  108.             {
  109.                 object selectedValue = SheetPage.Enviroment.InstanceData[this.DataField].Value;
  110.                 if (selectedValue == null)
  111.                 {
  112.                 }
  113.                 else if (this.Items.FindByValue(selectedValue.ToString()) != null)
  114.                 {
  115.                     this.SelectedValue = selectedValue.ToString();
  116.                 }
  117.                 else if (selectedValue.ToString() != "")
  118.                 {
  119.                     this.Items.Add(selectedValue.ToString());
  120.                     this.SelectedValue = selectedValue.ToString();
  121.                 }
  122.                 this.Enabled = SheetPage.Enviroment.InstanceData[this.DataField].Editable;
  123.             }
  124.         }
  126.         public virtual bool ValidateDataField(OThinker.H3.WorkSheet.SheetPage SheetPage, System.Collections.Generic.List<string> Errors)
  127.         {
  128.             if (
  129.                 this.DataField != null &&
  130.                 this.DataField != "" &&
  131.                 SheetPage.Enviroment.InstanceData[this.DataField] != null &&
  132.                 SheetPage.Enviroment.InstanceData[this.DataField].Visible &&
  133.                 SheetPage.Enviroment.InstanceData[this.DataField].Editable)
  134.             {
  135.                 //写回数据
  136.                 object convertedValue;
  137.                 try
  138.                 {
  139.                     convertedValue = OThinker.Data.Convertor.Convert(
  140.                         this.SelectedValue,
  141.                         SheetPage.Enviroment.InstanceData[this.DataField].ItemType,
  142.                         true);
  143.                 }
  144.                 catch
  145.                 {
  146.                     Errors.Add(
  147.                         "数据格式不正确，发生转换错误，请确认输入数据的格式正确！" +
  148.                         "字段名称为：" + this.DataField + "，" +
  149.                         "类型为：" + OThinker.H3.Data.DataLogicTypeConvertor.ToLogicTypeName(SheetPage.Enviroment.InstanceData[this.DataField].LogicType));
  150.                     return false;
  151.                 }
  152.             }
  153.             return true;
  154.         }
  156.         public virtual void SaveDataField(OThinker.H3.WorkSheet.SheetPage SheetPage)
  157.         {
  158.             if (
  159.                 this.DataField != null &&
  160.                 this.DataField != "" &&
  161.                 SheetPage.Enviroment.InstanceData[this.DataField] != null &&
  162.                 SheetPage.Enviroment.InstanceData[this.DataField].Visible &&
  163.                 SheetPage.Enviroment.InstanceData[this.DataField].Editable)
  164.             {
  165.                 //写回数据
  166.                 object convertedValue;
  167.                 try
  168.                 {
  169.                     convertedValue = OThinker.Data.Convertor.Convert(
  170.                         this.SelectedValue,
  171.                         SheetPage.Enviroment.InstanceData[this.DataField].ItemType,
  172.                         true);
  173.                 }
  174.                 catch
  175.                 {
  176.                     SheetPage.Enviroment.NotifyMessage(
  177.                         "数据格式不正确，发生转换错误，请确认输入数据的格式正确！" +
  178.                         "字段名称为：" + this.DataField + "，" +
  179.                         "类型为：" + OThinker.H3.Data.DataLogicTypeConvertor.ToLogicTypeName(SheetPage.Enviroment.InstanceData[this.DataField].LogicType));
  180.                     return;
  181.                 }
  182.                 SheetPage.Enviroment.InstanceData[DataField].Value = convertedValue;
  183.             }
  184.         }
  186.         #endregion
  188.         protected override void Render(HtmlTextWriter writer)
  189.         {
  190.             if (this.Enabled || this.RenderType != RenderType.LabelWhenDisable)
  191.             {
  192.                 base.Render(writer);
  193.             }
  194.             else if (this.SelectedIndex == -1)
  195.             {
  196.                 writer.Write("");
  197.             }
  198.             else
  199.             {
  200.                 writer.Write(this.SelectedItem.Text);
  201.             }
  202.         }
  203. }
  204. }