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c# - 在 asp.net 中使用表格打印 GridView

转载 作者：搜寻专家 更新时间：2023-11-01 04:20:29 26 4
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我正在使用 visual studio 2008 和 sql server 2008

我想使用一个按钮打印我的“带表格的 GridView ”在 3.5 中代码首先分为三部分，这是来 self 的默认页面

 protected void btnPrint_Click(object sender, EventArgs e)
{
    Session["ctrl"] = Panel1;
    ClientScript.RegisterStartupScript(this.GetType(), "onclick",
        "<script language=javascript>window.open('Print.aspx','PrintMe','height=300px,width=300px,scrollbars=1');</script>");
    PrintHelper.PrintWebControl(Panel1);
}

此代码来自打印页面

protected void Page_Load(object sender, EventArgs e)
{
    Control ctrl = (Control)Session["ctrl"];
    PrintHelper.PrintWebControl(ctrl);
}

这是我的打印助手类

 public PrintHelper()
{
}

public static void PrintWebControl(Control ctrl)
{
    PrintWebControl(ctrl, string.Empty);
}

public static void PrintWebControl(Control ctrl, string Script)
{
    StringWriter stringWrite = new StringWriter();
    System.Web.UI.HtmlTextWriter htmlWrite = new System.Web.UI.HtmlTextWriter(stringWrite);
    if (ctrl is WebControl)
    {
        Unit w = new Unit(100, UnitType.Percentage); ((WebControl)ctrl).Width = w;
    }
    Page pg = new Page();
    pg.EnableEventValidation = false;
    if (Script != string.Empty)
    {
        pg.ClientScript.RegisterStartupScript(pg.GetType(), "PrintJavaScript", Script);
    }
    HtmlForm frm = new HtmlForm();
    pg.Controls.Add(frm);
    frm.Attributes.Add("runat", "server");
    frm.Controls.Add(ctrl);
    pg.DesignerInitialize();
    pg.RenderControl(htmlWrite);
    string strHTML = stringWrite.ToString();
    HttpContext.Current.Response.Clear();
    HttpContext.Current.Response.Write(strHTML);
    HttpContext.Current.Response.Write("<script>window.print();</script>");
    HttpContext.Current.Response.End();
}

请帮帮我

最佳答案

也许这会有所帮助。

公共(public)类 GridViewExportUtil{

    public static void Export(string fileName, GridView gv)
    {
        HttpContext.Current.Response.Clear();
        HttpContext.Current.Response.ClearHeaders();
        HttpContext.Current.Response.ClearContent();
        HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("windows-1254");
        HttpContext.Current.Response.Charset = "windows-1254"; //ISO-8859-13 ISO-8859-9  windows-1254

        HttpContext.Current.Response.AddHeader(
            "content-disposition", string.Format("attachment; filename={0}", fileName));
        HttpContext.Current.Response.ContentType = "application/ms-excel";
        string header = "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\">\n<head>\n<title></title>\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=windows-1254\" />\n<style>\n</style>\n</head>\n<body>\n";

        using (StringWriter sw = new StringWriter())
        {
            using (HtmlTextWriter htw = new HtmlTextWriter(sw))
            {
                //  Create a form to contain the grid
                Table table = new Table();
                table.GridLines = GridLines.Horizontal;
                //table.CellSpacing = 17;

                //  add the header row to the table
                if (gv.HeaderRow != null)
                {
                    GridViewExportUtil.PrepareControlForExport(gv.HeaderRow);
                    table.Rows.Add(gv.HeaderRow);
                }

                //  add each of the data rows to the table
                foreach (GridViewRow row in gv.Rows)
                {
                    GridViewExportUtil.PrepareControlForExport(row);
                    table.Rows.Add(row);
                }

                //  add the footer row to the table
                if (gv.FooterRow != null)
                {
                    GridViewExportUtil.PrepareControlForExport(gv.FooterRow);

                    table.Rows.Add(gv.FooterRow);
                    //table.Height = 17;
                }

                //  render the table into the htmlwriter
                table.RenderControl(htw);

                //  render the htmlwriter into the response
                HttpContext.Current.Response.Write(header + sw.ToString());
                HttpContext.Current.Response.End();
            }
        }
    }

    /// <summary>
    /// Replace any of the contained controls with literals
    /// </summary>
    /// <param name="control"></param>
    private static void PrepareControlForExport(Control control)
    {
        for (int i = 0; i < control.Controls.Count; i++)
        {
            Control current = control.Controls[i];
            if (current is LinkButton)
            {
                control.Controls.Remove(current);
                control.Controls.AddAt(i, new LiteralControl((current as LinkButton).Text));
            }
            else if (current is ImageButton)
            {
                control.Controls.Remove(current);
                control.Controls.AddAt(i, new LiteralControl((current as ImageButton).AlternateText));
            }
            else if (current is HyperLink)
            {
                control.Controls.Remove(current);
                control.Controls.AddAt(i, new LiteralControl((current as HyperLink).Text));
            }
            else if (current is DropDownList)
            {
                control.Controls.Remove(current);
                control.Controls.AddAt(i, new LiteralControl((current as DropDownList).SelectedItem.Text));
            }
            else if (current is CheckBox)
            {
                control.Controls.Remove(current);
                control.Controls.AddAt(i, new LiteralControl((current as CheckBox).Checked ? "True" : "False"));
            }
            else if (current is Label)
            {
                control.Controls.Remove(current);
                control.Controls.AddAt(i, new LiteralControl((current as Label).Text));
            }

            if (current.HasControls())
            {
                GridViewExportUtil.PrepareControlForExport(current);
            }
        }
    }
}

关于c# - 在 asp.net 中使用表格打印 GridView ，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/5134090/

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