DataGridView导出Excel
（这个需要 Microsoft.Office.Interop.Excel.dll 在网上下载就可以）
public static void ExportExcel(string fileName, DataGridView myDGV)
{
string saveFileName = "";
SaveFileDialog saveDialog = new SaveFileDialog();
saveDialog.DefaultExt = "xls";
saveDialog.Filter = "Excel文件|*.xls";
saveDialog.FileName = fileName;
saveDialog.ShowDialog();
saveFileName = saveDialog.FileName;
if (saveFileName.IndexOf(":") < 0) return; //被点了取消
Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();
if (xlApp == null)
{
MessageBox.Show("无法创建Excel对象，可能您的机子未安装Excel");
return;
}
Microsoft.Office.Interop.Excel.Workbooks workbooks = xlApp.Workbooks;
Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];//取得sheet1
//写入标题
for (int i = 0; i < myDGV.ColumnCount; i++)
{
worksheet.Cells[1, i + 1] = myDGV.Columns[i].HeaderText;
}
//写入数值
for (int r = 0; r < myDGV.Rows.Count; r++)
{
for (int i = 0; i < myDGV.ColumnCount; i++)
{
worksheet.Cells[r + 2, i + 1] = myDGV.Rows[r].Cells[i].Value;
}
System.Windows.Forms.Application.DoEvents();
}
worksheet.Columns.EntireColumn.AutoFit();//列宽自适应
if (saveFileName != "")
{
try
{
workbook.Saved = true;
workbook.SaveCopyAs(saveFileName);
}
catch (Exception ex)
{
MessageBox.Show("导出文件时出错,文件可能正被打开！\n" + ex.Message);
}
}
xlApp.Quit();
GC.Collect();//强行销毁
MessageBox.Show("文件： " + fileName + ".xls 保存成功", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
打印机打印DataGridView
1. 首先创建打印类
using System;
using System.Text;
using System.Collections;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Printing;
using System.Data;
using System.Windows.Forms;
namespace WCY_LAB {
public class GridPrinter
{
// the grid to print
private DataGridView dataGridView;
// the PrintDocument
private PrintDocument printDocument;
// center printout?
private bool centerOnPage;
// has a title?
private bool hasTitle;
// title
private string title;
// font
private Font titleFont;
// title color
private Color titleColor;
// use paging?
private bool paging;
// row printing
static int currentRow;
// page printing
static int pageNumber;
// page width
private int pageWidth;
// page height
private int pageHeight;
// left margin
private int leftMargin;
// top margin
private int topMargin;
// right margin
private int rightMargin;
// bottom margin
private int bottomMargin;
// y location placeholder
private float currentY;
// grid sizes
private float rowHeaderHeight;
private List<float> rowsHeight;
private List<float> columnsWidth;
private float dataGridViewWidth;
// column stop points
private List<int[]> mColumnPoints;
private List<float> mColumnPointsWidth;
private int mColumnPoint;
public GridPrinter(DataGridView objDataGridView, PrintDocument objPrintDocument, bool bCenterOnPage, bool bHasTitle, string sTitle, Font objTitleFont, Color objTitleColor, bool bPaging)
{
dataGridView = objDataGridView;
printDocument = objPrintDocument;
centerOnPage = bCenterOnPage;
hasTitle = bHasTitle;
title = sTitle;
titleFont = objTitleFont;
titleColor = objTitleColor;
paging = bPaging;
pageNumber = 0;
rowsHeight = new List<float>();
columnsWidth = new List<float>();
mColumnPoints = new List<int[]>();
mColumnPointsWidth = new List<float>();
if (!printDocument.DefaultPageSettings.Landscape)
{
pageWidth = printDocument.DefaultPageSettings.PaperSize.Width;
pageHeight = printDocument.DefaultPageSettings.PaperSize.Height;
}
else
{
pageHeight = printDocument.DefaultPageSettings.PaperSize.Width;
pageWidth = printDocument.DefaultPageSettings.PaperSize.Height;
}
leftMargin = printDocument.DefaultPageSettings.Margins.Left;
topMargin = printDocument.DefaultPageSettings.Margins.Top;
rightMargin = printDocument.DefaultPageSettings.Margins.Right;
bottomMargin = printDocument.DefaultPageSettings.Margins.Bottom;
currentRow = 0;
}
// calculate printing metrics
private void Calculate(Graphics g)
{
if (pageNumber == 0)
{
SizeF tmpSize = new SizeF();
Font tmpFont;
float tmpWidth;
dataGridViewWidth = 0;
for (int i = 0; i < dataGridView.Columns.Count; i++)
{
tmpFont = dataGridView.ColumnHeadersDefaultCellStyle.Font;
if (tmpFont == null)
tmpFont = dataGridView.DefaultCellStyle.Font;
tmpSize = g.MeasureString(dataGridView.Columns[i].HeaderText, tmpFont);
tmpWidth = tmpSize.Width;
rowHeaderHeight = tmpSize.Height;
for (int j = 0; j < dataGridView.Rows.Count; j++)
{
tmpFont = dataGridView.Rows[j].DefaultCellStyle.Font;
if (tmpFont == null)
tmpFont = dataGridView.DefaultCellStyle.Font;
tmpSize = g.MeasureString("Anything", tmpFont);
rowsHeight.Add(tmpSize.Height);
tmpSize = g.MeasureString(dataGridView.Rows[j].Cells[i].EditedFormattedValue.ToString(), tmpFont);
if (tmpSize.Width > tmpWidth)
tmpWidth = tmpSize.Width;
}
if (dataGridView.Columns[i].Visible)
dataGridViewWidth += tmpWidth;
columnsWidth.Add(tmpWidth);
}
int k;
int mStartPoint = 0;
for (k = 0; k < dataGridView.Columns.Count; k++)
if (dataGridView.Columns[k].Visible)
{
mStartPoint = k;
break;
}
int mEndPoint = dataGridView.Columns.Count;
for (k = dataGridView.Columns.Count - 1; k >= 0; k--)
if (dataGridView.Columns[k].Visible)
{
mEndPoint = k + 1;
break;
}
float mTempWidth = dataGridViewWidth;
float mTempPrintArea = (float)pageWidth - (float)leftMargin - (float)rightMargin;
if (dataGridViewWidth > mTempPrintArea)
{
mTempWidth = 0.0F;
for (k = 0; k < dataGridView.Columns.Count; k++)
{
if (dataGridView.Columns[k].Visible)
{
mTempWidth += columnsWidth[k];
if (mTempWidth > mTempPrintArea)
{
mTempWidth -= columnsWidth[k];
mColumnPoints.Add(new int[] { mStartPoint, mEndPoint });
mColumnPointsWidth.Add(mTempWidth);
mStartPoint = k;
mTempWidth = columnsWidth[k];
}
}
mEndPoint = k + 1;
}
}
mColumnPoints.Add(new int[] { mStartPoint, mEndPoint });
mColumnPointsWidth.Add(mTempWidth);
mColumnPoint = 0;
}
}
// header printing
private void DrawHeader(Graphics g)
{
currentY = (float)topMargin;
if (paging)
{
pageNumber++;
string PageString = "Page " + pageNumber.ToString();
StringFormat PageStringFormat = new StringFormat();
PageStringFormat.Trimming = StringTrimming.Word;
PageStringFormat.FormatFlags = StringFormatFlags.NoWrap | StringFormatFlags.LineLimit | StringFormatFlags.NoClip;
PageStringFormat.Alignment = StringAlignment.Far;
Font PageStringFont = new Font("Arial", 8, FontStyle.Regular, GraphicsUnit.Point);
RectangleF PageStringRectangle = new RectangleF((float)leftMargin, currentY, (float)pageWidth - (float)rightMargin - (float)leftMargin, g.MeasureString(PageString, PageStringFont).Height);
g.DrawString(PageString, PageStringFont, new SolidBrush(Color.Black), PageStringRectangle, PageStringFormat);
currentY += g.MeasureString(PageString, PageStringFont).Height;
}
if (hasTitle)
{
StringFormat TitleFormat = new StringFormat();
TitleFormat.Trimming = StringTrimming.Word;
TitleFormat.FormatFlags = StringFormatFlags.NoWrap | StringFormatFlags.LineLimit | StringFormatFlags.NoClip;
if (centerOnPage)
TitleFormat.Alignment = StringAlignment.Center;
else
TitleFormat.Alignment = StringAlignment.Near;
RectangleF TitleRectangle = new RectangleF((float)leftMargin, currentY, (float)pageWidth - (float)rightMargin - (float)leftMargin, g.MeasureString(title, titleFont).Height);
g.DrawString(title, titleFont, new SolidBrush(titleColor), TitleRectangle, TitleFormat);
currentY += g.MeasureString(title, titleFont).Height;
}
float CurrentX = (float)leftMargin;
if (centerOnPage)
CurrentX += (((float)pageWidth - (float)rightMargin - (float)leftMargin) - mColumnPointsWidth[mColumnPoint]) / 2.0F;
Color HeaderForeColor = dataGridView.ColumnHeadersDefaultCellStyle.ForeColor;
if (HeaderForeColor.IsEmpty)
HeaderForeColor = dataGridView.DefaultCellStyle.ForeColor;
SolidBrush HeaderForeBrush = new SolidBrush(HeaderForeColor);
Color HeaderBackColor = dataGridView.ColumnHeadersDefaultCellStyle.BackColor;
if (HeaderBackColor.IsEmpty)
HeaderBackColor = dataGridView.DefaultCellStyle.BackColor;
SolidBrush HeaderBackBrush = new SolidBrush(HeaderBackColor);
Pen TheLinePen = new Pen(dataGridView.GridColor, 1);
Font HeaderFont = dataGridView.ColumnHeadersDefaultCellStyle.Font;
if (HeaderFont == null)
HeaderFont = dataGridView.DefaultCellStyle.Font;
RectangleF HeaderBounds = new RectangleF(CurrentX, currentY, mColumnPointsWidth[mColumnPoint], rowHeaderHeight);
g.FillRectangle(HeaderBackBrush, HeaderBounds);
StringFormat CellFormat = new StringFormat();
CellFormat.Trimming = StringTrimming.Word;
CellFormat.FormatFlags = StringFormatFlags.NoWrap | StringFormatFlags.LineLimit | StringFormatFlags.NoClip;
RectangleF CellBounds;
float ColumnWidth;
for (int i = (int)mColumnPoints[mColumnPoint].GetValue(0); i < (int)mColumnPoints[mColumnPoint].GetValue(1); i++)
{
if (!dataGridView.Columns[i].Visible) continue;
ColumnWidth = columnsWidth[i];
if (dataGridView.ColumnHeadersDefaultCellStyle.Alignment.ToString().Contains("Right"))
CellFormat.Alignment = StringAlignment.Far;
else if (dataGridView.ColumnHeadersDefaultCellStyle.Alignment.ToString().Contains("Center"))
CellFormat.Alignment = StringAlignment.Center;
else
CellFormat.Alignment = StringAlignment.Near;
CellBounds = new RectangleF(CurrentX, currentY, ColumnWidth, rowHeaderHeight);
g.DrawString(dataGridView.Columns[i].HeaderText, HeaderFont, HeaderForeBrush, CellBounds, CellFormat);
if (dataGridView.RowHeadersBorderStyle != DataGridViewHeaderBorderStyle.None)
g.DrawRectangle(TheLinePen, CurrentX, currentY, ColumnWidth, rowHeaderHeight);
CurrentX += ColumnWidth;
}
currentY += rowHeaderHeight;
}
// common row printing function
private bool DrawRows(Graphics g)
{
Pen TheLinePen = new Pen(dataGridView.GridColor, 1);
Font RowFont;
Color RowForeColor;
Color RowBackColor;
SolidBrush RowForeBrush;
SolidBrush RowBackBrush;
SolidBrush RowAlternatingBackBrush;
StringFormat CellFormat = new StringFormat();
CellFormat.Trimming = StringTrimming.Word;
CellFormat.FormatFlags = StringFormatFlags.NoWrap | StringFormatFlags.LineLimit;
RectangleF RowBounds;
float CurrentX;
float ColumnWidth;
while (currentRow < dataGridView.Rows.Count)
{
if (dataGridView.Rows[currentRow].Visible)
{
RowFont = dataGridView.Rows[currentRow].DefaultCellStyle.Font;
if (RowFont == null)
RowFont = dataGridView.DefaultCellStyle.Font;
RowForeColor = dataGridView.Rows[currentRow].DefaultCellStyle.ForeColor;
if (RowForeColor.IsEmpty)
RowForeColor = dataGridView.DefaultCellStyle.ForeColor;
RowForeBrush = new SolidBrush(RowForeColor);
RowBackColor = dataGridView.Rows[currentRow].DefaultCellStyle.BackColor;
if (RowBackColor.IsEmpty)
{
RowBackBrush = new SolidBrush(dataGridView.DefaultCellStyle.BackColor);
RowAlternatingBackBrush = new SolidBrush(dataGridView.AlternatingRowsDefaultCellStyle.BackColor);
}
else
{
RowBackBrush = new SolidBrush(RowBackColor);
RowAlternatingBackBrush = new SolidBrush(RowBackColor);
}
CurrentX = (float)leftMargin;
if (centerOnPage)
CurrentX += (((float)pageWidth - (float)rightMargin - (float)leftMargin) - mColumnPointsWidth[mColumnPoint]) / 2.0F;
RowBounds = new RectangleF(CurrentX, currentY, mColumnPointsWidth[mColumnPoint], rowsHeight[currentRow]);
if (currentRow % 2 == 0)
g.FillRectangle(RowBackBrush, RowBounds);
else
g.FillRectangle(RowAlternatingBackBrush, RowBounds);
for (int CurrentCell = (int)mColumnPoints[mColumnPoint].GetValue(0); CurrentCell < (int)mColumnPoints[mColumnPoint].GetValue(1); CurrentCell++)
{
if (!dataGridView.Columns[CurrentCell].Visible) continue;
if (dataGridView.Columns[CurrentCell].DefaultCellStyle.Alignment.ToString().Contains("Right"))
CellFormat.Alignment = StringAlignment.Far;
else if (dataGridView.Columns[CurrentCell].DefaultCellStyle.Alignment.ToString().Contains("Center"))
CellFormat.Alignment = StringAlignment.Center;
else
CellFormat.Alignment = StringAlignment.Near;
ColumnWidth = columnsWidth[CurrentCell];
RectangleF CellBounds = new RectangleF(CurrentX, currentY, ColumnWidth, rowsHeight[currentRow]);
g.DrawString(dataGridView.Rows[currentRow].Cells[CurrentCell].EditedFormattedValue.ToString(), RowFont, RowForeBrush, CellBounds, CellFormat);
if (dataGridView.CellBorderStyle != DataGridViewCellBorderStyle.None)
g.DrawRectangle(TheLinePen, CurrentX, currentY, ColumnWidth, rowsHeight[currentRow]);
CurrentX += ColumnWidth;
}
currentY += rowsHeight[currentRow];
if ((int)currentY > (pageHeight - topMargin - bottomMargin))
{
currentRow++;
return true;
}
}
currentRow++;
}
currentRow = 0;
mColumnPoint++;
if (mColumnPoint == mColumnPoints.Count)
{
mColumnPoint = 0;
return false;
}
else
return true;
}
// the main grid printing method
public bool DrawDataGridView(Graphics g)
{
try
{
Calculate(g);
DrawHeader(g);
bool bContinue = DrawRows(g);
return bContinue;
}
catch (Exception ex)
{
MessageBox.Show("ERROR: " + ex.Message.ToString(), Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Error);
return false;
}
}
}
}
2. 添加PrintDocument控件，并且绑定PrintPage事件（gridPrinter是全局变量，在下面初始化）
private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
bool more = gridPrinter.DrawDataGridView(e.Graphics);
if (more == true)
e.HasMorePages = true;
}
3. 初始化打印类
private bool InitializePrinting()
{
PrintDialog printDialog = new PrintDialog();
if (printDialog.ShowDialog() != DialogResult.OK)
return false;
printDocument1.DocumentName = "历史信息";
printDocument1.PrinterSettings = printDialog.PrinterSettings;
printDocument1.DefaultPageSettings = printDialog.PrinterSettings.DefaultPageSettings;
printDocument1.DefaultPageSettings.Margins = new Margins(40, 40, 40, 40);
gridPrinter = new GridPrinter(dataGridView1, printDocument1, true, true, "历史信息", new Font("黑体", 18, FontStyle.Bold, GraphicsUnit.Point), Color.Blue, true);
return true;
}
4. 按钮调用
private void btnPrint_Click(object sender, EventArgs e)
{
if (InitializePrinting())
{
PrintPreviewDialog printPreviewDialog = new PrintPreviewDialog();
printPreviewDialog.Document = printDocument1;
printPreviewDialog.ShowDialog();
}
}
时间： 2024-10-26 22:49:31