Question

我只是想问一下如何搜索数据集中的特定数据，因为我想搜索特定关键字的摘要并将其绑定到转发器我有表达式并且它不起作用

        string keyword = "where summary like %"+ txtbKeyword.Text +"%" ;


        DataSet ds = new DataSet();
        int selectedTopicID = Convert.ToInt32(ddlTopics.SelectedValue);
        int selectedSkillID = Convert.ToInt32(ddlSkills.SelectedValue);
        int selectedTypeID = Convert.ToInt32(ddlTypes.SelectedValue);
        ds = Resoursce.Search_Resource(selectedTopicID, selectedSkillID, selectedTypeID);
        lbl_totalResult.Text = ds.Tables[0].Rows.Count.ToString();
        rp_resList.DataSource = ds.Tables[0].Select(keyword);
        rp_resList.DataBind();

System.Data.SyntaxErrorException未由用户代码

处理

 HResult=-2146232032
  Message=Syntax error: Missing operand after 'summary' operator.
  Source=System.Data
  StackTrace:
       at System.Data.ExpressionParser.Parse()
       at System.Data.DataExpression..ctor(DataTable table, String expression, Type type)
       at System.Data.DataTable.Select(String filterExpression)
       at Christoc.Modules.ResourcesFilter.View.ddlTopics_SelectedIndexChanged(Object sender, EventArgs e) in c:\inetpub\wwwroot\ideaPark\DesktopModules\ResourcesFilter\View.ascx.cs:line 120
       at System.Web.UI.WebControls.ListControl.OnSelectedIndexChanged(EventArgs e)
       at System.Web.UI.Page.RaiseChangedEvents()
       at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
  InnerException:

Answer 1

您可以使用DataTable.Select（）方法。 http://msdn.microsoft.com/en-us/library/t5ce3dyt.aspx

微软的例子：

  // Presuming the DataTable has a column named Date. 
  string expression = "Date = '1/31/1979' or OrderID = 2";
  // string expression = "OrderQuantity = 2 and OrderID = 2";

  // Sort descending by column named CompanyName. 
  string sortOrder = "CompanyName ASC";
  DataRow[] foundRows;

  // Use the Select method to find all rows matching the filter.
  foundRows = table.Select(expression, sortOrder);

如何在数据集中搜索特定数据

1 个答案: