如何在asp.net中动态添加页脚模板 [英] how to add footer template dynamically in asp.net

问题描述

大家好，



我动态创建了一个gridview。在设计部分中描述了模板字段。所有列都是通过代码创建的，如下所示。它的工作正常。在这里，我可以列出每行的页面。但我不知道如何通过代码隐藏在页脚模板中实现页面总和。

Hi All,

I have created a gridview dynamically. There is template fields described in designing portion. All the columns were created thru code behind as follows. Its works fine. Here I can listed the pages for each rows. But I dont know how to implement the sum of pages in the footer template thru code behind.

TemplateField Pages = new TemplateField();
Pages.HeaderText = "Pages";
Pages.ItemTemplate = new GridViewTemplate_Pages();
gv1.Columns.Add(Pages);


        public class GridViewTemplate_Pages : ITemplate
        {
            
            void ITemplate.InstantiateIn(Control container)
            {
                Label PagesLabel = new Label();
                PagesLabel.DataBinding += new EventHandler(this.PagesLabel_DataBinding);
                container.Controls.Add(PagesLabel);
            }

            void PagesLabel_DataBinding(object sender, EventArgs e)
            {
                Label lbl1 = (Label)sender;
                GridViewRow row = (GridViewRow)lbl1.NamingContainer;
                lbl1.Text = DataBinder.Eval(row.DataItem, "PagesReceived").ToString();
            }
        }

在aspx页面中给出ShowFooter =True并单独写入RowDataBound。如果我在aspx页面中给出了页脚模板但是不知道如何以编程方式获得结果，则以下代码可以正常工作。请给我建议。

Given ShowFooter="True" in aspx page and RowDataBound written separately. The following code works fine if I given footer template in aspx page but do not know how to get the result in programmatically. Please advice.

protected void gv1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                int RowTotalPages = Convert.ToInt32(DataBinder.Eval(e.Row.DataItem, "PagesReceived"));
                TotalPages = TotalPages + RowTotalPages;
            }
            if (e.Row.RowType == DataControlRowType.Footer)
            {
                Label m = (Label)e.Row.FindControl("gv1TotalPages");
                m.Text = TotalPages.ToString();
            }
        }

推荐答案

这是一个愚蠢的事情。我让它变得复杂。我需要页脚行中页面的总和，那么我为什么要思考和混淆GridViewTemplate和Itemplate类。我只是在会话中添加了Total页面，并在DataControlRowType.Footer中重新收集它。以下是代码：

Its a silly thing. I made it complex. I need the sum of pages in the footer row, then why should I think and confuse about GridViewTemplate and Itemplate class. Simply I added the Total pages in the session and recollect it in the DataControlRowType.Footer. Here is the code:

protected void gv1_RowDataBound(object sender, GridViewRowEventArgs e)
       {
           if (e.Row.RowType == DataControlRowType.DataRow)
           {
               int RowTotalPages = Convert.ToInt32(DataBinder.Eval(e.Row.DataItem, "PagesReceived"));
               TotalPages = TotalPages + RowTotalPages;
                Session.Add("TotalPages", TotalPages.ToString());
            }
           if (e.Row.RowType == DataControlRowType.Footer)
           {
               e.Row.Cells[4].Text = "Batches Count: " + gv1.Rows.Count.ToString();
               e.Row.Cells[5].Text = Session["TotalPages"].ToString();
            }
       }

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