我正在尝试获取Print Preview
上显示的此数据库的DataGridView
,如下图所示:
但是,当我在Print Preview
上显示数据库时单击DataGridView
时,出现以下错误(由图像显示):
指出错误:
catch (Exception exc) // The error pointed on this line
{
MessageBox.Show(exc.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
以下printDocument1_PrintPage()
方法:
private void printDocument1_PrintPage(object sender, PrintPageEventArgs e)
{
try
{
//Set the left margin
int iLeftMargin = e.MarginBounds.Left;
//Set the top margin
int iTopMargin = e.MarginBounds.Top;
//Whether more pages have to print or not
bool bMorePagesToPrint = false;
int iTmpWidth = 0;
int width = 500;
int height = 90;
//For the first page to print set the cell width and header height
if (bFirstPage)
{
foreach (DataGridViewColumn GridCol in dataGridView1.Columns)
{
iTmpWidth = (int)(Math.Floor((double)((double)GridCol.Width / (double)iTotalWidth * (double)iTotalWidth * ((double)e.MarginBounds.Width / (double)iTotalWidth))));
iHeaderHeight = (int)(e.Graphics.MeasureString(GridCol.HeaderText, GridCol.InheritedStyle.Font, iTmpWidth).Height) + 11;
// Save width and height of headres
arrColumnLefts.Add(iLeftMargin);
arrColumnWidths.Add(iTmpWidth);
iLeftMargin += iTmpWidth;
}
}
//Loop till all the grid rows not get printed
while (iRow <= dataGridView1.Rows.Count - 1)
{
DataGridViewRow GridRow = dataGridView1.Rows[iRow];
//Set the cell height
iCellHeight = GridRow.Height + 5;
int iCount = 0;
//Check whether the current page settings allo more rows to print
if (iTopMargin + iCellHeight >= e.MarginBounds.Height + e.MarginBounds.Top)
{
bNewPage = true;
bFirstPage = false;
bMorePagesToPrint = true;
break;
}
else
{
if (bNewPage)
{
//Draw Header
e.Graphics.DrawString("Student Payment Summary", new Font(dataGridView1.Font, FontStyle.Bold), Brushes.Black, e.MarginBounds.Left, e.MarginBounds.Top - e.Graphics.MeasureString("Student Payment Summary", new Font(dataGridView1.Font, FontStyle.Bold), e.MarginBounds.Width).Height - 13);
String strDate = DateTime.Now.ToLongDateString() + " " + DateTime.Now.ToShortTimeString();
//Draw Date
e.Graphics.DrawString(strDate, new Font(dataGridView1.Font, FontStyle.Regular), Brushes.Black, e.MarginBounds.Left + (e.MarginBounds.Width - e.Graphics.MeasureString(strDate, new Font(dataGridView1.Font, FontStyle.Regular), e.MarginBounds.Width).Width), e.MarginBounds.Top - e.Graphics.MeasureString("Student Payment Summary", new Font(new Font(dataGridView1.Font, FontStyle.Regular), FontStyle.Regular), e.MarginBounds.Width).Height - 13);
//Draw Image
e.Graphics.DrawImage(pictureBox1.Image, new Rectangle(300, 0, width, height));
//Draw Columns
iTopMargin = e.MarginBounds.Top;
foreach (DataGridViewColumn GridCol in dataGridView1.Columns)
{
e.Graphics.FillRectangle(new SolidBrush(Color.Aqua), new Rectangle((int)arrColumnLefts[iCount], iTopMargin, (int)arrColumnWidths[iCount], iHeaderHeight));
e.Graphics.DrawRectangle(Pens.Black, new Rectangle((int)arrColumnLefts[iCount], iTopMargin, (int)arrColumnWidths[iCount], iHeaderHeight));
e.Graphics.DrawString(GridCol.HeaderText, GridCol.InheritedStyle.Font, new SolidBrush(GridCol.InheritedStyle.ForeColor), new RectangleF((int)arrColumnLefts[iCount], iTopMargin, (int)arrColumnWidths[iCount], iHeaderHeight), strFormat);
iCount++;
}
bNewPage = false;
iTopMargin += iHeaderHeight;
}
iCount = 0;
//Draw Columns Contents
foreach (DataGridViewCell Cel in GridRow.Cells)
{
if (Cel.Value != null)
{
e.Graphics.DrawString(Cel.Value.ToString(), Cel.InheritedStyle.Font, new SolidBrush(Cel.InheritedStyle.ForeColor = System.Drawing.Color.Blue), new RectangleF((int)arrColumnLefts[iCount], (float)iTopMargin, (int)arrColumnWidths[iCount], (float)iCellHeight), strFormat);
//Drawing Cells Borders
e.Graphics.DrawRectangle(Pens.Red, new Rectangle((int)arrColumnLefts[iCount], iTopMargin, (int)arrColumnWidths[iCount], iCellHeight));
iCount++;
}
}
}
iRow++;
iTopMargin += iCellHeight;
}
//If more lines exist, print another page.
if (bMorePagesToPrint)
{
e.HasMorePages = true;
}
else
{
e.HasMorePages = false;
}
}
catch (Exception exc) // The error pointed on this line
{
MessageBox.Show(exc.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
以下是所有必要打印文件的代码:
private void PrintPreview(object sender, EventArgs e)
{
PrintPreviewDialog _PrintPreview = new PrintPreviewDialog();
printDocument1.DefaultPageSettings.Landscape = true;
_PrintPreview.Document = printDocument1;
((Form)_PrintPreview).WindowState = FormWindowState.Maximized;
_PrintPreview.ShowDialog();
}
private void PrintFile(object sender, EventArgs e)
{
PrintDialog printDialog = new PrintDialog();
printDocument1.DefaultPageSettings.Landscape = true;
printDialog.Document = printDocument1;
printDialog.UseEXDialog = true;
if (DialogResult.OK == printDialog.ShowDialog())
{
printDocument1.DocumentName = "Document Page Print";
printDocument1.Print();
}
}
private void printDocument1_BeginPrint(object sender, PrintEventArgs e)
{
try
{
strFormat = new StringFormat();
strFormat.Alignment = StringAlignment.Center;
strFormat.LineAlignment = StringAlignment.Center;
strFormat.Trimming = StringTrimming.EllipsisCharacter;
arrColumnLefts.Clear();
arrColumnWidths.Clear();
iCellHeight = 0;
iRow = 0;
bFirstPage = true;
bNewPage = true;
iTotalWidth = 0;
foreach (DataGridViewColumn dgvGridCol in dataGridView1.Columns)
{
iTotalWidth += dgvGridCol.Width;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void printDocument1_PrintPage(object sender, PrintPageEventArgs e)
{
try
{
//Set the left margin
int iLeftMargin = e.MarginBounds.Left;
//Set the top margin
int iTopMargin = e.MarginBounds.Top;
//Whether more pages have to print or not
bool bMorePagesToPrint = false;
int iTmpWidth = 0;
int width = 500;
int height = 90;
//For the first page to print set the cell width and header height
if (bFirstPage)
{
foreach (DataGridViewColumn GridCol in dataGridView1.Columns)
{
iTmpWidth = (int)(Math.Floor((double)((double)GridCol.Width / (double)iTotalWidth * (double)iTotalWidth * ((double)e.MarginBounds.Width / (double)iTotalWidth))));
iHeaderHeight = (int)(e.Graphics.MeasureString(GridCol.HeaderText, GridCol.InheritedStyle.Font, iTmpWidth).Height) + 11;
// Save width and height of headres
arrColumnLefts.Add(iLeftMargin);
arrColumnWidths.Add(iTmpWidth);
iLeftMargin += iTmpWidth;
}
}
//Loop till all the grid rows not get printed
while (iRow <= dataGridView1.Rows.Count - 1)
{
DataGridViewRow GridRow = dataGridView1.Rows[iRow];
//Set the cell height
iCellHeight = GridRow.Height + 5;
int iCount = 0;
//Check whether the current page settings allo more rows to print
if (iTopMargin + iCellHeight >= e.MarginBounds.Height + e.MarginBounds.Top)
{
bNewPage = true;
bFirstPage = false;
bMorePagesToPrint = true;
break;
}
else
{
if (bNewPage)
{
//Draw Header
e.Graphics.DrawString("Student Payment Summary", new Font(dataGridView1.Font, FontStyle.Bold), Brushes.Black, e.MarginBounds.Left, e.MarginBounds.Top - e.Graphics.MeasureString("Student Payment Summary", new Font(dataGridView1.Font, FontStyle.Bold), e.MarginBounds.Width).Height - 13);
String strDate = DateTime.Now.ToLongDateString() + " " + DateTime.Now.ToShortTimeString();
//Draw Date
e.Graphics.DrawString(strDate, new Font(dataGridView1.Font, FontStyle.Regular), Brushes.Black, e.MarginBounds.Left + (e.MarginBounds.Width - e.Graphics.MeasureString(strDate, new Font(dataGridView1.Font, FontStyle.Regular), e.MarginBounds.Width).Width), e.MarginBounds.Top - e.Graphics.MeasureString("Student Payment Summary", new Font(new Font(dataGridView1.Font, FontStyle.Regular), FontStyle.Regular), e.MarginBounds.Width).Height - 13);
//Draw Image
e.Graphics.DrawImage(pictureBox1.Image, new Rectangle(300, 0, width, height));
//Draw Columns
iTopMargin = e.MarginBounds.Top;
foreach (DataGridViewColumn GridCol in dataGridView1.Columns)
{
e.Graphics.FillRectangle(new SolidBrush(Color.Aqua), new Rectangle((int)arrColumnLefts[iCount], iTopMargin, (int)arrColumnWidths[iCount], iHeaderHeight));
e.Graphics.DrawRectangle(Pens.Black, new Rectangle((int)arrColumnLefts[iCount], iTopMargin, (int)arrColumnWidths[iCount], iHeaderHeight));
e.Graphics.DrawString(GridCol.HeaderText, GridCol.InheritedStyle.Font, new SolidBrush(GridCol.InheritedStyle.ForeColor), new RectangleF((int)arrColumnLefts[iCount], iTopMargin, (int)arrColumnWidths[iCount], iHeaderHeight), strFormat);
iCount++;
}
bNewPage = false;
iTopMargin += iHeaderHeight;
}
iCount = 0;
//Draw Columns Contents
foreach (DataGridViewCell Cel in GridRow.Cells)
{
if (Cel.Value != null)
{
e.Graphics.DrawString(Cel.Value.ToString(), Cel.InheritedStyle.Font, new SolidBrush(Cel.InheritedStyle.ForeColor = System.Drawing.Color.Blue), new RectangleF((int)arrColumnLefts[iCount], (float)iTopMargin, (int)arrColumnWidths[iCount], (float)iCellHeight), strFormat);
//Drawing Cells Borders
e.Graphics.DrawRectangle(Pens.Red, new Rectangle((int)arrColumnLefts[iCount], iTopMargin, (int)arrColumnWidths[iCount], iCellHeight));
iCount++;
}
}
}
iRow++;
iTopMargin += iCellHeight;
}
//If more lines exist, print another page.
if (bMorePagesToPrint)
{
e.HasMorePages = true;
}
else
{
e.HasMorePages = false;
}
}
catch (Exception exc)
{
MessageBox.Show(exc.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void printPreviewToolStripMenuItem_Click(object sender, EventArgs e)
{
PrintPreview(sender, e);
}
private void printToolStripMenuItem_Click(object sender, EventArgs e)
{
PrintFile(sender, e);
}
此图片位于Designer.cs
:
更新
堆栈跟踪(调用堆栈):
我的想法: 问题出现是因为在DataGridView
列上有一个复选框,并且打印文件无法显示那些复选框,它是只是为了在系统中显示。这是真的吗?
非常感谢任何帮助!
非常感谢!