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标题: GRID中使用ASP的DropDownList控件，OnSelectedIndexChanged只对第一行起 [打印本页]
作者: 大鸟打小鸟    时间: 2012-12-29 09:23
标题: GRID中使用ASP的DropDownList控件，OnSelectedIndexChanged只对第一行起
三石大人您好！我在GRID中使用了ASP的DropDownList控件，但是在使用中OnSelectedIndexChanged只对第一行起作用！这是什么原因呢？

  1. <form id="form1" runat="server">
  2. <ext:PageManager ID="PageManager1" runat="server" AjaxAspnetControls="aspDdl,aspTb" />
  3. <ext:Grid ID="gridTest" ShowBorder="true" ShowHeader="true" EnableCheckBoxSelect="True" ForceFitAllTime="True"
  4. Title="明细" EnableMultiSelect="True" EnableRowNumber="True" runat="server" OnRowDataBound="gridTest_RowDataBound">
  5. <Columns>
  6. <ext:TemplateField HeaderText="选择" Width="100px">
  7. <ItemTemplate>
  8. <asp:DropDownList runat="server" ID="aspDdl" Width="80%" OnSelectedIndexChanged="aspDdl_SelectedIndexChanged" AutoPostBack="True"></asp:DropDownList>
  9. </ItemTemplate>
  10. </ext:TemplateField>

  12. <ext:TemplateField HeaderText="文本" Width="100px" >
  13. <ItemTemplate>
  14. <asp:TextBox ID="aspTb" runat="server" Width="80%" TabIndex='<%# Container.DataItemIndex + 10 %>'
  15. Text='<%# Eval("Description") %>'></asp:TextBox>
  16. </ItemTemplate>
  17. </ext:TemplateField>

  19. </Columns>
  20. </ext:Grid>



  24. </form>
复制代码
  1. public partial class WebForm1 : System.Web.UI.Page
  2. {
  3. protected void Page_Load(object sender, EventArgs e)
  4. {
  5. if (IsPostBack)
  6. return;

  8. gridTest.DataSource = GetDdlBind();
  9. gridTest.DataBind();
  10. }

  12. protected void gridTest_RowDataBound(object sender, FineUI.GridRowEventArgs e)
  13. {
  14. GridRow row = gridTest.Rows[e.RowIndex];

  16. var aspDdlCompany = (AspNet.DropDownList)row.FindControl("aspDdl");
  17. aspDdlCompany.DataSource = GetDdlBind();
  18. aspDdlCompany.DataTextField = "Product";
  19. aspDdlCompany.DataValueField = "Version";
  20. aspDdlCompany.DataBind();

  22. }

  24. protected void aspDdl_SelectedIndexChanged(object sender, EventArgs e)
  25. {
  26. GridRow row = gridTest.Rows[gridTest.SelectedRowIndex];
  27. var aspDdl = (AspNet.DropDownList)row.FindControl("aspDdl");
  28. var aspTb = (AspNet.TextBox)row.FindControl("aspTb");

  30. aspTb.Text = aspDdl.SelectedValue;
  31. }


  34. private DataTable GetDdlBind()
  35. {
  36. DataTable tblDatas = new DataTable("Datas");
  37. DataColumn dc = null;
  38. dc = tblDatas.Columns.Add("ID", Type.GetType("System.Int32"));
  39. dc.AutoIncrement = true;//自动增加
  40. dc.AutoIncrementSeed = 1;//起始为1
  41. dc.AutoIncrementStep = 1;//步长为1
  42. dc.AllowDBNull = false;//

  44. dc = tblDatas.Columns.Add("Product", Type.GetType("System.String"));
  45. dc = tblDatas.Columns.Add("Version", Type.GetType("System.String"));
  46. dc = tblDatas.Columns.Add("Description", Type.GetType("System.String"));

  48. DataRow newRow;
  49. newRow = tblDatas.NewRow();
  50. newRow["Product"] = "大话西游";
  51. newRow["Version"] = "2.0";
  52. newRow["Description"] = "我很喜欢";
  53. tblDatas.Rows.Add(newRow);

  55. newRow = tblDatas.NewRow();
  56. newRow["Product"] = "梦幻西游";
  57. newRow["Version"] = "3.0";
  58. newRow["Description"] = "比大话更幼稚";
  59. tblDatas.Rows.Add(newRow);
  60. return tblDatas;
  61. }
  62. }
复制代码
[attach]1528[/attach]
[attach]1529[/attach]
作者: sanshi    时间: 2012-12-31 21:02
测试了一下，两行中的下拉列表都能触发，只不过在更新模板列之后，要手工调用 UpdateTemplateFields：
  1. protected void aspDdl_SelectedIndexChanged(object sender, EventArgs e)
  2.         {
  3.             GridRow row = gridTest.Rows[gridTest.SelectedRowIndex];
  4.             var aspDdl = (AspNet.DropDownList)row.FindControl("aspDdl");
  5.             var aspTb = (AspNet.TextBox)row.FindControl("aspTb");

  7.             aspTb.Text = aspDdl.SelectedValue;

  9.             gridTest.UpdateTemplateFields();
  10.         }
复制代码


[attach]1534[/attach]
作者: 大鸟打小鸟    时间: 2013-1-2 13:16
原来如此，谢谢三石了{:soso_e100:}



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