C#中将控件数据导出Excel
在asp项⽬中的⼀个把数据 导出Excel表格的⼩事件如下：
protected void ibnOut_Click(object sender, ImageClickEventArgs e)//导出Excel按钮的点击事件
{
GridView2.DataSource = dt;//dt是查询出的结果集
GridView2.DataBind();
Response.Clear();
Response.Buffer = true;
Response.Charset = "UTF-8";
Response.ContentType = "application/octet-stream";
Response.AppendHeader("Content-Disposition", "attachment;filename=/"" + HttpUtility.UrlEncode ("FileName.xls", System.Text.Encoding.UTF8) + "/"");
Response.ContentEncoding = System.Text.Encoding.UTF8;
Response.HeaderEncoding = System.Text.Encoding.UTF8;
Response.ContentType = "application/ms-excel";//设置输出⽂件类型为excel⽂件。
GridView2.Visible = true;//设置成true才能显⽰写出 标记A
System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
this.GridView2.RenderControl(oHtmlTextWriter);
Response.Output.Write(oStringWriter.ToString());
Response.Flush();
Response.End();
GridView2.Visible = false;//不让控件在前台显⽰
//如果控件使⽤的是前台显⽰的控件 并且分页 那么我们可以在标记A处设置成不分页 然后在最后在还原成分页状态
}
之后⼀定要重写⽅法：
public override void VerifyRenderingInServerForm(Control control)
{
// base.VerifyRenderingInServerForm(control);
}
asp中，读取导⼊的Excel⽂件 插⼊操作：
protected void btnDaoru_Click(object sender, EventArgs e)
{
lblshowmessage.Text = "";
if (FileUploadExcel.HasFile)
{
string fileException = System.IO.Path.GetExtension(FileUploadExcel.FileName).ToLower(); //获取扩展名
if (fileException == ".xls")
{
string fileName = System.IO.Path.GetFileName(FileUploadExcel.FileName);
string serverPath = Server.MapPath("~/Upload/board.xls");//获取完整上传路径
FileUploadExcel.PostedFile.SaveAs(serverPath);//⽂件上传到服务器
getsavefilenameOleDbConnection conn = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + serverPath + ";Extended Properties=Excel 8.0;");//连接串
string cmdTxt = "Select * from [Sheet1$]";
string cmdTxt = "Select * from [Sheet1$]";
OleDbCommand cmd = new OleDbCommand(cmdTxt, conn);
try
{
conn.Open();
IDataReader r = cmd.ExecuteReader();
int success = 0;
int failed = 0;
int count = 0;
while (r.Read())
{
count++;
try
{
BFlowChart c = new BFlowChart();
Share s = new Share();
c.BoardState = "完好";
c.BxOrFb = "保修";
c.Imei = Convert.ToString(r[0]);
c.InputTime = DateTime.Now;
c.ListNO = "KFRK";
c.ListSort = "保修库房⼊库";
c.Mobile = Share.GetMobileTypeByImei(Convert.ToString(r[0]));
c.Remark = txtRemark.Text;
c.ReseveUserID = "bxkf";
c.ReseveName = "保修库房";
c.Source = ddlSourceType.SelectedValue;
c.UserID = lblloginUserI
d.Text;
c.UserName = lblloginUserName.Text;
if (service.ExistAndNotOut(c.Imei))
{
lblshowmessage.Text += "【" + count + "】导⼊失败，imei已存在于系统<br />";
continue;
}
if (null == c.Imei || c.Imei.Length == 0)
{
lblshowmessage.Text += "【" + count + "】导⼊失败，imei为空<br />";
continue;
}
if (c.Imei.Length != 15)
{
lblshowmessage.Text += "【" + count + "】" + c.Imei + "IMEI不是15位<br />";
}
if (c.Mobile == "")
{
lblshowmessage.Text += "【" + count + "】" + c.Imei + "没有成功得到机型<br />";                                }
service.BoardSaoru(c);
success++;
}
catch (Exception ex)
{
failed++;
//message += "/>【" + count + "】" + ex.Message + "<br />";
lblshowmessage.Text += "【" + count + "】" + ex.Message + "<br />";
}
}
}
r.Close();
BindGridView();
lblshowmessage.Text += "成功导⼊数据" + success + "条";
}
finally
{
conn.Close();
System.IO.File.Delete(serverPath);
}
}
else
{
lblshowScript.Text = "<script>alert('导⼊⽂件的格式需要.xls ⽂件');</script>";                }
}
else
{
lblshowScript.Text = "<script>alert('请选择需要导⼊的.xls⽂件');</script>";
}
}

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