c# - 将 sql 参数值传递给 devexpress 报告？

Question

我想将一个 sql 参数从用户表单传递到我的报表类，但它不起作用并且它不创建报表，当我在向报表类添加 ID 参数后再次打开报表设计器选项卡时它刷新报表并删除我的组件。

问题是什么？

这是我的报告课:

public SodoorZemanatName(long ID)
    {
        InitializeComponent(ID);
    }

    protected override void Dispose(bool disposing)
    {
        if (disposing && (components != null))
        {
            components.Dispose();
        }
        base.Dispose(disposing);
    }

    #region Designer generated code
    private void InitializeComponent(long ID)
    {
            this.components = new System.ComponentModel.Container();
            DevExpress.DataAccess.Sql.CustomSqlQuery customSqlQuery1 = new DevExpress.DataAccess.Sql.CustomSqlQuery();
            DevExpress.DataAccess.Sql.QueryParameter queryParameter1 = new DevExpress.DataAccess.Sql.QueryParameter();
            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(SodoorZemanatName));
            this.topMarginBand1 = new DevExpress.XtraReports.UI.TopMarginBand();
            this.detailBand1 = new DevExpress.XtraReports.UI.DetailBand();
            this.bottomMarginBand1 = new DevExpress.XtraReports.UI.BottomMarginBand();
            this.sqlDataSource2 = new DevExpress.DataAccess.Sql.SqlDataSource(this.components);
            ((System.ComponentModel.ISupportInitialize)(this)).BeginInit();
            this.topMarginBand1.HeightF = 100F;
            this.topMarginBand1.Name = "topMarginBand1";
            this.detailBand1.HeightF = 100F;
            this.detailBand1.Name = "detailBand1";
            this.bottomMarginBand1.HeightF = 100F;
            this.bottomMarginBand1.Name = "bottomMarginBand1";
            this.sqlDataSource2.ConnectionName = "Context";
            this.sqlDataSource2.Name = "sqlDataSource2";
            customSqlQuery1.Name = "Query";
            queryParameter1.Name = "ID";
            queryParameter1.Type = typeof(long);
            queryParameter1.ValueInfo = "0";
            queryParameter1.Value = ID;
            customSqlQuery1.Parameters.Add(queryParameter1);
            customSqlQuery1.Sql = "select * from LG_Garanti where ID=@ID";
            this.sqlDataSource2.Queries.AddRange(new DevExpress.DataAccess.Sql.SqlQuery[] {
            customSqlQuery1});
            this.sqlDataSource2.ResultSchemaSerializable = resources.GetString("sqlDataSource2.ResultSchemaSerializable");
    this.Bands.AddRange(new DevExpress.XtraReports.UI.Band[] {
    this.topMarginBand1,
    this.detailBand1,
    this.bottomMarginBand1});
    this.ComponentStorage.AddRange(new System.ComponentModel.IComponent[] {
    this.sqlDataSource2});
    this.DataSource = this.sqlDataSource2;
    this.Version = "15.2";
    ((System.ComponentModel.ISupportInitialize)(this)).EndInit();
}
#endregion

这是我的使命:

SodoorZemanatName report = new SodoorZemanatName(1);
ASPxDocumentViewer1.ReportTypeName = "SodoorZemanatName";
ASPxDocumentViewer1.Report = report;

Answer 1

我猜您想 (1) 单击按钮，(2) 传递一个 ID，然后 (3) 打开报告，其内容取决于该 ID。所以这就是我做的方式，(我不确定是否有其他方式，因为 devexpress 不是开源的):

1. 设计您的数据集，它仅包含您想使用 Visual Studio 的数据集工具显示的信息。即 id、名称、地址、..... 命名该数据集 = ReportDataset。该数据集有 1 个名为 MyTable 的表。
2. 使用 GUI 工具设计名为 MyReport 的报表(记得选择 XtraReport)，并选择数据源 = ReportDataset，不要编辑 GUI 工具生成的代码。只需使用 GUI，单击并单击以添加标签，从 ReportDataset 添加值。

3. 在您的表单、窗口表单或其他任何形式中，以下内容应该在由 button_click 事件触发的函数内(您在问题的最后一个片段中的“调用”):

   DataSet new_ds = new DataSet();
   ReportDataset.MyTable runtime_data = new ReportDataset.MyTable();
   //get data from your database according to ID, Row by row 
   //then add them to the runtime_data table
   //in your case, add all the result of "select * from LG_Garanti where ID=@ID";
   runtime_data.Rows.Add(new object[] {.blah blah..});// just add row, use whatever method you like
   new_ds.Tables.Add(runtime_data);
   //from this point, new_ds contains runtime data of the row(s) you want ID.
   //now just link that dynamic dataset to your designed report
   MyReport my_report = new MyReport();
   my_report.DataSource = new_ds;
   // Show the print preview or do whatever you want 
   ReportPrintTool printTool = new ReportPrintTool(my_report);
   printTool.ShowRibbonPreviewDialog();
   

以上内容是为了使其更加灵活，因为报告可以使用自己的数据集和不同表格的混合，....您可以通过在步骤 1 中重用自己的数据集来使其更容易。希望这会有所帮助。