如何在Asp.net Web表单应用程序中的代码中设置SelectParameter？

Question

我一直收到错误，在尝试使用以下内容时必须声明标量变量“@inspIdFk”：

protected void rgInspections_SelectedIndexChanged(object sender, EventArgs e)
    {
        foreach (GridDataItem item in rgInspections.SelectedItems)
        {
            hdn_insp_id_pk.Value = item["inspIdPk"].Text;
        }

        string inspidvalue = hdn_insp_id_pk.Value;

        if (HttpContext.Current.User.IsInRole("AKOB") || (HttpContext.Current.User.IsInRole("aMgr")))
        {
            SqlDataSource sdcRgActExps2 = new SqlDataSource();
            sdcRgActExps2.ID = "sdcRgActExps2";
            this.Page.Controls.Add(sdcRgActExps2);
            sdcRgActExps2.ConnectionString = System.Configuration.ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString;
            sdcRgActExps2.SelectCommand = "SELECT ae.actExpIdPk, ae.inspIdFk, ae.actExpDt, aet.actExpType, ae.actExpQty, ae.actExpRate, ae.actExpBill, (ae.actExpQty * ae.actExpRate) AS subTotal FROM inspActExps ae LEFT JOIN actExpTypes aet ON ae.actExpType = aet.actExpTypeIdPk WHERE ([inspIdFk] = @inspIdFk) AND actExpSecCd = 1 ORDER BY actExpDt";
            sdcRgActExps2.SelectParameters.Add("@inspIdFk", inspidvalue);
            rgActExps2.DataSource = sdcRgActExps2;
            rgActExps2.DataBind();
        }
        else
        { 
            ...
        }
    }

如何成功设置@inspIdFk的值？我验证了查询确实通过从WHERE子句中删除inspIdFk = @inspIdFk来提取数据。

Answer 1

据我了解，SqlDataSource.SelectParameters.Add采用参数名称而不是符号，因此您的添加应如下所示：

sdcRgActExps2.SelectParameters.Add("inspIdFk", inspidvalue);