javascript 在 asp.net 中使用表格打印网格视图
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grid view printing with table in asp.net
提问by CHANDRAHAS
i am using visual studio 2008 and sql server 2008
我正在使用 Visual Studio 2008 和 sql server 2008
i want to print my "gridview with table"using a button in asp.net 3.5 code has three part first this is from my default page
我想使用 asp.net 3.5 代码中的按钮打印我的“带有表格的网格视图”首先包含三部分这是来自我的默认页面
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);
}
this code this from print page
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);
}
and this is my print helper class
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();
}
please help me out
请帮帮我
采纳答案by r3st0r3
Create a Data Adapter, create a Command Object with a Select query, set the adapter's command to this command object, issue an adapter.fill(dataset), set the data source of gridview as the dataset and databind the GridView.
创建一个数据适配器，创建一个带有选择查询的命令对象，将适配器的命令设置为这个命令对象，发出一个adapter.fill(dataset)，将gridview 的数据源设置为数据集并绑定GridView。
For code, a simple Google search will work. You did not even specify a language. I guess you are working in C# and this is your college project. Is it?
对于代码，一个简单的谷歌搜索就可以了。你甚至没有指定一种语言。我猜你正在使用 C#，这是你的大学项目。是吗？
回答by adt
maybe this can help.
也许这会有所帮助。
public class GridViewExportUtil {
公共类 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);
}
}
}
}
回答by RQDQ
First, get your data displaying in the GridView (there are about a bazillion resources on this site and other to show you how to do that).
首先，让您的数据显示在 GridView 中（本网站和其他网站上有大量资源向您展示如何做到这一点）。
Here's the javascript to print the window:
这是打印窗口的javascript：
<INPUT TYPE="button" onClick="window.print()">
