Asp.net GridView資料導出到Excel，Word

一、asp.net DataGridView導出到Excel的三個方法

#region DataGridView資料顯示到Excel

/// <summary>

/// 打開Excel并将DataGridView控件中資料導出到Excel

/// </summary>

/// <param name="dgv">DataGridView對象 </param>

/// <param name="isShowExcle">是否顯示Excel界面 </param>

/// <remarks>

/// add com "Microsoft Excel 11.0 Object Library"

/// using Excel=Microsoft.Office.Interop.Excel;

/// </remarks>

/// <returns> </returns>

public bool DataGridviewShowToExcel(DataGridView dgv, bool isShowExcle)

{

if (dgv.Rows.Count == 0)

return false;

//建立Excel對象

Excel.Application excel = new Excel.Application();

excel.Application.Workbooks.Add(true);

excel.Visible = isShowExcle;

//生成字段名稱

for (int i = 0; i < dgv.ColumnCount; i++)

{

excel.Cells[1, i + 1] = dgv.Columns[i].HeaderText;

}

//填充資料

for (int i = 0; i < dgv.RowCount - 1; i++)

{

for (int j = 0; j < dgv.ColumnCount; j++)

{

if (dgv[j, i].ValueType == typeof(string))

{

excel.Cells[i + 2, j + 1] = "'" + dgv[j, i].Value.ToString();

}

else

{

excel.Cells[i + 2, j + 1] = dgv[j, i].Value.ToString();

}

return true;

}

#endregion

#region DateGridView導出到csv格式的Excel

/// <summary>

/// 常用方法，列之間加/t，一行一行輸出，此檔案其實是csv檔案，不過預設可以當成Excel打開。

/// </summary>

/// <remarks>

/// using System.IO;

/// </remarks>

/// <param name="dgv"></param>

private void DataGridViewToExcel(DataGridView dgv)

{

SaveFileDialog dlg = new SaveFileDialog();

dlg.Filter = "Execl files (*.xls)|*.xls";

dlg.FilterIndex = 0;

dlg.RestoreDirectory = true;

dlg.CreatePrompt = true;

dlg.Title = "儲存為Excel檔案";

if (dlg.ShowDialog() == DialogResult.OK)

{

Stream myStream;

myStream = dlg.OpenFile();

StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding(-0));

string columnTitle = "";

try

{

//寫入列标題

for (int i = 0; i < dgv.ColumnCount; i++)

{

if (i > 0)

{

columnTitle += "/t";

}

columnTitle += dgv.Columns[i].HeaderText;

}

sw.WriteLine(columnTitle);

//寫入列内容

for (int j = 0; j < dgv.Rows.Count; j++)

{

string columnValue = "";

for (int k = 0; k < dgv.Columns.Count; k++)

{

if (k > 0)

{

columnValue += "/t";

}

if (dgv.Rows[j].Cells[k].Value == null)

columnValue += "";

else

columnValue += dgv.Rows[j].Cells[k].Value.ToString().Trim();

}

sw.WriteLine(columnValue);

}

sw.Close();

myStream.Close();

}

catch (Exception e)

{

MessageBox.Show(e.ToString());

}

finally

{

sw.Close();

myStream.Close();

}

#endregion

#region DataGridView導出到Excel，有一定的判斷性

/// <summary>

///方法，導出DataGridView中的資料到Excel檔案

/// </summary>

/// <remarks>

/// add com "Microsoft Excel 11.0 Object Library"

/// using Excel=Microsoft.Office.Interop.Excel;

/// using System.Reflection;

/// </remarks>

/// <param name= "dgv"> DataGridView </param>

public static void DataGridViewToExcel(DataGridView dgv)

{

#region 驗證可操作性

//申明儲存對話框

SaveFileDialog dlg = new SaveFileDialog();

//默然檔案字尾

dlg.DefaultExt = "xls ";

//檔案字尾清單

dlg.Filter = "EXCEL檔案(*.XLS)|*.xls ";

//默然路徑是系統目前路徑

dlg.InitialDirectory = Directory.GetCurrentDirectory();

//打開儲存對話框

if (dlg.ShowDialog() == DialogResult.Cancel) return;

//傳回檔案路徑

string fileNameString = dlg.FileName;

//驗證strFileName是否為空或值無效

if (fileNameString.Trim() == " ")

{ return; }

//定義表格内資料的行數和列數

int rowscount = dgv.Rows.Count;

int colscount = dgv.Columns.Count;

//行數必須大于0

if (rowscount <= 0)

{

MessageBox.Show("沒有資料可供儲存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

return;

}

//列數必須大于0

if (colscount <= 0)

{

MessageBox.Show("沒有資料可供儲存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

return;

}

//行數不可以大于65536

if (rowscount > 65536)

{

MessageBox.Show("資料記錄數太多(最多不能超過65536條)，不能儲存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

return;

}

//列數不可以大于255

if (colscount > 255)

{

MessageBox.Show("資料記錄行數太多，不能儲存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

return;

}

//驗證以fileNameString命名的檔案是否存在，如果存在删除它

FileInfo file = new FileInfo(fileNameString);

if (file.Exists)

{

try

{

file.Delete();

}

catch (Exception error)

{

MessageBox.Show(error.Message, "删除失敗 ", MessageBoxButtons.OK, MessageBoxIcon.Warning);

return;

}

#endregion

Excel.Application objExcel = null;

Excel.Workbook objWorkbook = null;

Excel.Worksheet objsheet = null;

try

{

//申明對象

objExcel = new Microsoft.Office.Interop.Excel.Application();

objWorkbook = objExcel.Workbooks.Add(Missing.Value);

objsheet = (Excel.Worksheet)objWorkbook.ActiveSheet;

//設定EXCEL不可見

objExcel.Visible = false;

//向Excel中寫入表格的表頭

int displayColumnsCount = 1;

for (int i = 0; i <= dgv.ColumnCount - 1; i++)

{

if (dgv.Columns[i].Visible == true)

{

objExcel.Cells[1, displayColumnsCount] = dgv.Columns[i].HeaderText.Trim();

displayColumnsCount++;

}

//設定進度條

//tempProgressBar.Refresh();

//tempProgressBar.Visible = true;

//tempProgressBar.Minimum=1;

//tempProgressBar.Maximum=dgv.RowCount;

//tempProgressBar.Step=1;

//向Excel中逐行逐列寫入表格中的資料

for (int row = 0; row <= dgv.RowCount - 1; row++)

{

//tempProgressBar.PerformStep();

displayColumnsCount = 1;

for (int col = 0; col < colscount; col++)

{

if (dgv.Columns[col].Visible == true)

{

try

{

objExcel.Cells[row + 2, displayColumnsCount] = dgv.Rows[row].Cells[col].Value.ToString().Trim();

displayColumnsCount++;

}

catch (Exception)

{

}

//隐藏進度條

//tempProgressBar.Visible = false;

//儲存檔案

objWorkbook.SaveAs(fileNameString, Missing.Value, Missing.Value, Missing.Value, Missing.Value,

Missing.Value, Excel.XlSaveAsAccessMode.xlShared, Missing.Value, Missing.Value, Missing.Value,

Missing.Value, Missing.Value);

}

catch (Exception error)

{

MessageBox.Show(error.Message, "警告 ", MessageBoxButtons.OK, MessageBoxIcon.Warning);

return;

}

finally

{

//關閉Excel應用

if (objWorkbook != null) objWorkbook.Close(Missing.Value, Missing.Value, Missing.Value);

if (objExcel.Workbooks != null) objExcel.Workbooks.Close();

if (objExcel != null) objExcel.Quit();

objsheet = null;

objWorkbook = null;

objExcel = null;

}

MessageBox.Show(fileNameString + "/n/n導出完畢! ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

}

#endregion

二、 Asp.net Gridview Export PDF,Word,Excel,Csv

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="CSharp.aspx.cs" Inherits="CSharp" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<title>GridView Export</title>

</head>

<body>

<div>

<asp:GridView ID="GridView1" runat="server"

AutoGenerateColumns = "false" Font-Names = "Arial"

Font-Size = "11pt" AlternatingRowStyle-BackColor = "#C2D69B"

HeaderStyle-BackColor = "green" AllowPaging ="true"

OnPageIndexChanging = "OnPaging" >

<asp:BoundField ItemStyle-Width = "150px" DataField = "CustomerID" HeaderText = "CustomerID" />

<asp:BoundField ItemStyle-Width = "150px" DataField = "City" HeaderText = "City"/>

<asp:BoundField ItemStyle-Width = "150px" DataField = "Country" HeaderText = "Country"/>

<asp:BoundField ItemStyle-Width = "150px" DataField = "PostalCode" HeaderText = "PostalCode"/>

</Columns>

</asp:GridView>

</div>

<br />

<asp:Button ID="btnExportWord" runat="server" Text="ExportToWord" OnClick="btnExportWord_Click" />

<asp:Button ID="btnExportExcel" runat="server" Text="ExportToExcel" OnClick="btnExportExcel_Click" />

<asp:Button ID="btnExportPDF" runat="server" Text="ExportToPDF" OnClick="btnExportPDF_Click" />

<asp:Button ID="Button1" runat="server" Text="ExportToCSV" OnClick="btnExportCSV_Click" />

</form>

</body>

</html>

背景編輯代碼時需引用itextsharp.dll元件

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

using System.IO;

using iTextSharp.text;

using iTextSharp.text.pdf;

using iTextSharp.text.html;

using iTextSharp.text.html.simpleparser;

using System.Text;

public partial class CSharp : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

string strQuery = "select CustomerID,City,Country,PostalCode from customers";

SqlCommand cmd = new SqlCommand(strQuery);

DataTable dt = GetData(cmd);

GridView1.DataSource = dt;

GridView1.DataBind();

}

private DataTable GetData(SqlCommand cmd)

{

DataTable dt = new DataTable();

String strConnString = System.Configuration.ConfigurationManager.ConnectionStrings["conString"].ConnectionString;

SqlConnection con = new SqlConnection(strConnString);

SqlDataAdapter sda = new SqlDataAdapter();

cmd.CommandType = CommandType.Text;

cmd.Connection = con;

try

{

con.Open();

sda.SelectCommand = cmd;

sda.Fill(dt);

return dt;

}

catch (Exception ex)

{

throw ex;

}

finally

{

con.Close();

sda.Dispose();

con.Dispose();

}

public override void VerifyRenderingInServerForm(Control control)

{

/* Verifies that the control is rendered */

}

protected void OnPaging(object sender, GridViewPageEventArgs e)

{

GridView1.PageIndex = e.NewPageIndex;

GridView1.DataBind();

}

protected void btnExportWord_Click(object sender, EventArgs e)

{

Response.Clear();

Response.Buffer = true;

Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.doc");

Response.Charset = "";

Response.ContentType = "application/vnd.ms-word ";

StringWriter sw= new StringWriter();

HtmlTextWriter hw = new HtmlTextWriter(sw);

GridView1.AllowPaging = false;

GridView1.DataBind();

GridView1.RenderControl(hw);

Response.Output.Write(sw.ToString());

Response.Flush();

Response.End();

}

protected void btnExportExcel_Click(object sender, EventArgs e)

{

Response.Clear();

Response.Buffer = true;

Response.AddHeader("content-disposition",

"attachment;filename=GridViewExport.xls");

Response.Charset = "";

Response.ContentType = "application/vnd.ms-excel";

StringWriter sw = new StringWriter();

HtmlTextWriter hw = new HtmlTextWriter(sw);

GridView1.AllowPaging = false;

GridView1.DataBind();

//Change the Header Row back to white color

GridView1.HeaderRow.Style.Add("background-color", "#FFFFFF");

//Apply style to Individual Cells

GridView1.HeaderRow.Cells[0].Style.Add("background-color", "green");

GridView1.HeaderRow.Cells[1].Style.Add("background-color", "green");

GridView1.HeaderRow.Cells[2].Style.Add("background-color", "green");

GridView1.HeaderRow.Cells[3].Style.Add("background-color", "green");

for (int i = 0; i < GridView1.Rows.Count;i++ )

{

GridViewRow row = GridView1.Rows[i];

//Change Color back to white

row.BackColor = System.Drawing.Color.White;

//Apply text style to each Row

row.Attributes.Add("class", "textmode");

//Apply style to Individual Cells of Alternating Row

if (i % 2 != 0)

{

row.Cells[0].Style.Add("background-color", "#C2D69B");

row.Cells[1].Style.Add("background-color", "#C2D69B");

row.Cells[2].Style.Add("background-color", "#C2D69B");

row.Cells[3].Style.Add("background-color", "#C2D69B");

}

GridView1.RenderControl(hw);

//style to format numbers to string

string style = @"<mce:style><!--

.textmode { mso-number-format:/@; }

--></mce:style><style mce_bogus="1"> .textmode { mso-number-format:/@; } </style>";

Response.Write(style);

Response.Output.Write(sw.ToString());

Response.Flush();

Response.End();

}

protected void btnExportPDF_Click(object sender, EventArgs e)

{

Response.ContentType = "application/pdf";

Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.pdf");

Response.Cache.SetCacheability(HttpCacheability.NoCache);

StringWriter sw = new StringWriter();

HtmlTextWriter hw = new HtmlTextWriter(sw);

GridView1.AllowPaging = false;

GridView1.DataBind();

GridView1.RenderControl(hw);

StringReader sr = new StringReader(sw.ToString());

Document pdfDoc = new Document(PageSize.A4, 10f,10f,10f,0f);

HTMLWorker htmlparser = new HTMLWorker(pdfDoc);

PdfWriter.GetInstance(pdfDoc, Response.OutputStream);

pdfDoc.Open();

htmlparser.Parse(sr);

pdfDoc.Close();

Response.Write(pdfDoc);

Response.End();

}

protected void btnExportCSV_Click(object sender, EventArgs e)

{

Response.Clear();

Response.Buffer = true;

Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.csv");

Response.Charset = "";

Response.ContentType = "application/text";

GridView1.AllowPaging = false;

GridView1.DataBind();

StringBuilder sb = new StringBuilder();

for (int k = 0; k < GridView1.Columns.Count; k++)

{

//add separator

sb.Append(GridView1.Columns[k].HeaderText + ',');

}

//append new line

sb.Append("/r/n");

for (int i = 0; i < GridView1.Rows.Count; i++)

{

for (int k = 0; k < GridView1.Columns.Count; k++)

{

//add separator

sb.Append(GridView1.Rows[i].Cells[k].Text + ',');

}

//append new line

sb.Append("/r/n");

}

Response.Output.Write(sb.ToString());

Response.Flush();

Response.End();

}

Asp.net GridView資料導出到Excel，Word

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