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DataGridView打印预览
DataGridView 打印 ----------
#region
DataGridView 打印 ----------
private
static
StringFormat StrFormat;
//
Holds content of a TextBox Cell to write by DrawString
private
static
StringFormat StrFormatComboBox;
//
Holds content of a Boolean Cell to write by DrawImage
private
static
Button CellButton;
//
Holds the Contents of Button Cell
private
static
CheckBox CellCheckBox;
//
Holds the Contents of CheckBox Cell
private
static
ComboBox CellComboBox;
//
Holds the Contents of ComboBox Cell
private
static
int
TotalWidth;
//
Summation of Columns widths
private
static
int
RowPos;
//
Position of currently printing row
private
static
bool
NewPage;
//
Indicates if a new page reached
private
static
int
PageNo;
//
Number of pages to print
private
static
ArrayList ColumnLefts
=
new
ArrayList();
//
Left Coordinate of Columns
private
static
ArrayList ColumnWidths
=
new
ArrayList();
//
Width of Columns
private
static
ArrayList ColumnTypes
=
new
ArrayList();
//
DataType of Columns
private
static
int
CellHeight;
//
Height of DataGrid Cell
private
static
int
RowsPerPage;
//
Number of Rows per Page
private
static
System.Drawing.Printing.PrintDocument printDoc
=
new
System.Drawing.Printing.PrintDocument();
//
PrintDocumnet Object used for printing
private
static
string
PrintTitle
=
""
;
//
Header of pages
private
static
DataGridView dgvPrint;
//
Holds DataGridView Object to print its contents
private
static
List
<
string
>
SelectedColumns
=
new
List
<
string
>
();
//
The Columns Selected by user to print.
private
static
List
<
string
>
AvailableColumns
=
new
List
<
string
>
();
//
All Columns avaiable in DataGrid
private
static
bool
PrintAllRows
=
true
;
//
True = print all rows, False = print selected rows
private
static
bool
FitToPageWidth
=
true
;
//
True = Fits selected columns to page width , False = Print columns as showed
private
static
int
HeaderHeight
=
0
;
public
static
void
Print_DataGridView(DataGridView dgv)
{
PrintPreviewDialog ppvw;
try
{
dgvPrint
=
dgv;
//
Getting all Coulmns Names in the DataGridView
AvailableColumns.Clear();
foreach
(DataGridViewColumn c
in
dgv.Columns)
{
if
(
!
c.Visible)
continue
;
AvailableColumns.Add(c.HeaderText);
}
Showing the PrintOption Form
#region
Showing the PrintOption Form
//
PrintOptions dlg = new PrintOptions(AvailableColumns);
//
if (dlg.ShowDialog() != DialogResult.OK) return;
//
PrintTitle = dlg.PrintTitle;
//
PrintAllRows = dlg.PrintAllRows;
//
FitToPageWidth = dlg.FitToPageWidth;
//
SelectedColumns = dlg.GetSelectedColumns();
#endregion
No PrintOption Form
#region
No PrintOption Form
PrintTitle
=
string
.Empty;
PrintAllRows
=
true
;
FitToPageWidth
=
true
;
SelectedColumns
=
AvailableColumns;
#endregion
RowsPerPage
=
0
;
ppvw
=
new
PrintPreviewDialog();
ppvw.Document
=
printDoc;
//
Showing the Print Preview Page
printDoc.BeginPrint
+=
new
System.Drawing.Printing.PrintEventHandler(PrintDoc_BeginPrint);
printDoc.PrintPage
+=
new
System.Drawing.Printing.PrintPageEventHandler(PrintDoc_PrintPage);
((Form)ppvw).WindowState
=
FormWindowState.Maximized;
if
(ppvw.ShowDialog()
!=
DialogResult.OK)
{
printDoc.BeginPrint
-=
new
System.Drawing.Printing.PrintEventHandler(PrintDoc_BeginPrint);
printDoc.PrintPage
-=
new
System.Drawing.Printing.PrintPageEventHandler(PrintDoc_PrintPage);
return
;
}
//
Printing the Documnet
printDoc.Print();
printDoc.BeginPrint
-=
new
System.Drawing.Printing.PrintEventHandler(PrintDoc_BeginPrint);
printDoc.PrintPage
-=
new
System.Drawing.Printing.PrintPageEventHandler(PrintDoc_PrintPage);
}
catch
(Exception ex)
{
MessageBox.Show(ex.Message,
"
Error
"
, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
}
}
private
static
void
PrintDoc_BeginPrint(
object
sender,
System.Drawing.Printing.PrintEventArgs e)
{
try
{
//
Formatting the Content of Text Cell to print
StrFormat
=
new
StringFormat();
StrFormat.Alignment
=
StringAlignment.Near;
StrFormat.LineAlignment
=
StringAlignment.Center;
StrFormat.Trimming
=
StringTrimming.EllipsisCharacter;
//
Formatting the Content of Combo Cells to print
StrFormatComboBox
=
new
StringFormat();
StrFormatComboBox.LineAlignment
=
StringAlignment.Center;
StrFormatComboBox.FormatFlags
=
StringFormatFlags.NoWrap;
StrFormatComboBox.Trimming
=
StringTrimming.EllipsisCharacter;
ColumnLefts.Clear();
ColumnWidths.Clear();
ColumnTypes.Clear();
CellHeight
=
0
;
RowsPerPage
=
0
;
//
For various column types
CellButton
=
new
Button();
CellCheckBox
=
new
CheckBox();
CellComboBox
=
new
ComboBox();
//
Calculating Total Widths
TotalWidth
=
0
;
foreach
(DataGridViewColumn GridCol
in
dgvPrint.Columns)
{
if
(
!
GridCol.Visible)
continue
;
if
(
!
SelectedColumns.Contains(GridCol.HeaderText))
continue
;
TotalWidth
+=
GridCol.Width;
}
PageNo
=
1
;
NewPage
=
true
;
RowPos
=
0
;
}
catch
(Exception ex)
{
MessageBox.Show(ex.Message,
"
Error
"
, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private
static
void
PrintDoc_PrintPage(
object
sender,
System.Drawing.Printing.PrintPageEventArgs e)
{
int
tmpWidth, i;
int
tmpTop
=
e.MarginBounds.Top;
int
tmpLeft
=
e.MarginBounds.Left;
try
{
//
Before starting first page, it saves Width & Height of Headers and CoulmnType
if
(PageNo
==
1
)
{
foreach
(DataGridViewColumn GridCol
in
dgvPrint.Columns)
{
if
(
!
GridCol.Visible)
continue
;
//
Skip if the current column not selected
if
(
!
SelectedColumns.Contains(GridCol.HeaderText))
continue
;
//
Detemining whether the columns are fitted to page or not.
if
(FitToPageWidth)
tmpWidth
=
(
int
)(Math.Floor((
double
)((
double
)GridCol.Width
/
(
double
)TotalWidth
*
(
double
)TotalWidth
*
((
double
)e.MarginBounds.Width
/
(
double
)TotalWidth))));
else
tmpWidth
=
GridCol.Width;
HeaderHeight
=
(
int
)(e.Graphics.MeasureString(GridCol.HeaderText,
GridCol.InheritedStyle.Font, tmpWidth).Height)
+
11
;
//
Save width & height of headres and ColumnType
ColumnLefts.Add(tmpLeft);
ColumnWidths.Add(tmpWidth);
ColumnTypes.Add(GridCol.GetType());
tmpLeft
+=
tmpWidth;
}
}
//
Printing Current Page, Row by Row
while
(RowPos
<=
dgvPrint.Rows.Count
-
1
)
{
遍历行 ---
#region
遍历行 ---
DataGridViewRow GridRow
=
dgvPrint.Rows[RowPos];
if
(GridRow.IsNewRow
||
(
!
PrintAllRows
&&
!
GridRow.Selected))
{
RowPos
++
;
continue
;
}
获取列中最大的高度 ----
#region
获取列中最大的高度 ----
int
maxHeigth
=
0
;
int
width
=
0
;
int
height
=
0
;
string
text
=
string
.Empty;
i
=
0
;
foreach
(DataGridViewCell Cel
in
GridRow.Cells)
{
遍历列
#region
遍历列
if
(
!
Cel.OwningColumn.Visible)
continue
;
if
(
!
SelectedColumns.Contains(Cel.OwningColumn.HeaderText))
continue
;
//
For the TextBox Column
if
(((Type)ColumnTypes[i]).Name
==
"
DataGridViewTextBoxColumn
"
||
((Type)ColumnTypes[i]).Name
==
"
DataGridViewLinkColumn
"
||
((Type)ColumnTypes[i]).Name
==
"
DataGridViewButtonColumn
"
||
((Type)ColumnTypes[i]).Name
==
"
DataGridViewCheckBoxColumn
"
)
{
text
=
Cel.Value
+
string
.Empty;
width
=
(
int
)ColumnWidths[i];
}
//
For the ComboBox Column
else
if
(((Type)ColumnTypes[i]).Name
==
"
DataGridViewComboBoxColumn
"
)
{
text
=
Cel.EditedFormattedValue
+
string
.Empty;
width
=
(
int
)ColumnWidths[i];
}
//
每列所需要的实际高度
height
=
(
int
)(e.Graphics.MeasureString(text,
Cel.InheritedStyle.Font, width).Height)
+
11
;
if
(height
>
maxHeigth) maxHeigth
=
height;
#endregion
i
++
;
}
#endregion
CellHeight
=
maxHeigth;
//
GridRow.Height;
if
(tmpTop
+
CellHeight
>=
e.MarginBounds.Height
+
e.MarginBounds.Top)
{
DrawFooter(e, RowsPerPage);
NewPage
=
true
;
PageNo
++
;
e.HasMorePages
=
true
;
return
;
}
else
{
if
(NewPage)
{
//
Draw Header
e.Graphics.DrawString(PrintTitle,
new
Font(dgvPrint.Font, FontStyle.Bold),
Brushes.Black, e.MarginBounds.Left, e.MarginBounds.Top
-
e.Graphics.MeasureString(PrintTitle,
new
Font(dgvPrint.Font,
FontStyle.Bold), e.MarginBounds.Width).Height
-
13
);
String s
=
DateTime.Now.ToLongDateString()
+
"
"
+
DateTime.Now.ToShortTimeString();
e.Graphics.DrawString(s,
new
Font(dgvPrint.Font, FontStyle.Bold),
Brushes.Black, e.MarginBounds.Left
+
(e.MarginBounds.Width
-
e.Graphics.MeasureString(s,
new
Font(dgvPrint.Font,
FontStyle.Bold), e.MarginBounds.Width).Width), e.MarginBounds.Top
-
e.Graphics.MeasureString(PrintTitle,
new
Font(
new
Font(dgvPrint.Font,
FontStyle.Bold), FontStyle.Bold), e.MarginBounds.Width).Height
-
13
);
//
Draw Columns
tmpTop
=
e.MarginBounds.Top;
i
=
0
;
foreach
(DataGridViewColumn GridCol
in
dgvPrint.Columns)
{
遍历列
#region
遍历列
if
(
!
GridCol.Visible)
continue
;
if
(
!
SelectedColumns.Contains(GridCol.HeaderText))
continue
;
e.Graphics.FillRectangle(
new
SolidBrush(Color.LightGray),
new
Rectangle((
int
)ColumnLefts[i], tmpTop,
(
int
)ColumnWidths[i], HeaderHeight));
e.Graphics.DrawRectangle(Pens.Black,
new
Rectangle((
int
)ColumnLefts[i], tmpTop,
(
int
)ColumnWidths[i], HeaderHeight));
e.Graphics.DrawString(GridCol.HeaderText, GridCol.InheritedStyle.Font,
new
SolidBrush(GridCol.InheritedStyle.ForeColor),
new
RectangleF((
int
)ColumnLefts[i], tmpTop,
(
int
)ColumnWidths[i], HeaderHeight), StrFormat);
i
++
;
#endregion
}
NewPage
=
false
;
tmpTop
+=
HeaderHeight;
}
//
Draw Columns Contents
i
=
0
;
foreach
(DataGridViewCell Cel
in
GridRow.Cells)
{
遍历列
#region
遍历列
if
(
!
Cel.OwningColumn.Visible)
continue
;
if
(
!
SelectedColumns.Contains(Cel.OwningColumn.HeaderText))
continue
;
//
For the TextBox Column
if
(((Type)ColumnTypes[i]).Name
==
"
DataGridViewTextBoxColumn
"
||
((Type)ColumnTypes[i]).Name
==
"
DataGridViewLinkColumn
"
)
{
e.Graphics.DrawString(Cel.Value.ToString(), Cel.InheritedStyle.Font,
new
SolidBrush(Cel.InheritedStyle.ForeColor),
new
RectangleF((
int
)ColumnLefts[i], (
float
)tmpTop,
(
int
)ColumnWidths[i], (
float
)CellHeight), StrFormat);
}
//
For the Button Column
else
if
(((Type)ColumnTypes[i]).Name
==
"
DataGridViewButtonColumn
"
)
{
CellButton.Text
=
Cel.Value.ToString();
CellButton.Size
=
new
Size((
int
)ColumnWidths[i], CellHeight);
Bitmap bmp
=
new
Bitmap(CellButton.Width, CellButton.Height);
CellButton.DrawToBitmap(bmp,
new
Rectangle(
0
,
0
,
bmp.Width, bmp.Height));
e.Graphics.DrawImage(bmp,
new
Point((
int
)ColumnLefts[i], tmpTop));
}
//
For the CheckBox Column
else
if
(((Type)ColumnTypes[i]).Name
==
"
DataGridViewCheckBoxColumn
"
)
{
CellCheckBox.Size
=
new
Size(
14
,
14
);
CellCheckBox.Checked
=
(
bool
)Cel.Value;
Bitmap bmp
=
new
Bitmap((
int
)ColumnWidths[i], CellHeight);
Graphics tmpGraphics
=
Graphics.FromImage(bmp);
tmpGraphics.FillRectangle(Brushes.White,
new
Rectangle(
0
,
0
,
bmp.Width, bmp.Height));
CellCheckBox.DrawToBitmap(bmp,
new
Rectangle((
int
)((bmp.Width
-
CellCheckBox.Width)
/
2
),
(
int
)((bmp.Height
-
CellCheckBox.Height)
/
2
),
CellCheckBox.Width, CellCheckBox.Height));
e.Graphics.DrawImage(bmp,
new
Point((
int
)ColumnLefts[i], tmpTop));
}
//
For the ComboBox Column
else
if
(((Type)ColumnTypes[i]).Name
==
"
DataGridViewComboBoxColumn
"
)
{
CellComboBox.Size
=
new
Size((
int
)ColumnWidths[i], CellHeight);
Bitmap bmp
=
new
Bitmap(CellComboBox.Width, CellComboBox.Height);
CellComboBox.DrawToBitmap(bmp,
new
Rectangle(
0
,
0
,
bmp.Width, bmp.Height));
e.Graphics.DrawImage(bmp,
new
Point((
int
)ColumnLefts[i], tmpTop));
e.Graphics.DrawString(Cel.EditedFormattedValue
+
string
.Empty, Cel.InheritedStyle.Font,
new
SolidBrush(Cel.InheritedStyle.ForeColor),
new
RectangleF((
int
)ColumnLefts[i]
+
1
, tmpTop, (
int
)ColumnWidths[i]
-
16
, CellHeight), StrFormatComboBox);
}
//
For the Image Column
else
if
(((Type)ColumnTypes[i]).Name
==
"
DataGridViewImageColumn
"
)
{
Rectangle CelSize
=
new
Rectangle((
int
)ColumnLefts[i],
tmpTop, (
int
)ColumnWidths[i], CellHeight);
Size ImgSize
=
((Image)(Cel.FormattedValue)).Size;
e.Graphics.DrawImage((Image)Cel.FormattedValue,
new
Rectangle((
int
)ColumnLefts[i]
+
(
int
)((CelSize.Width
-
ImgSize.Width)
/
2
),
tmpTop
+
(
int
)((CelSize.Height
-
ImgSize.Height)
/
2
),
((Image)(Cel.FormattedValue)).Width, ((Image)(Cel.FormattedValue)).Height));
}
//
Drawing Cells Borders
e.Graphics.DrawRectangle(Pens.Black,
new
Rectangle((
int
)ColumnLefts[i],
tmpTop, (
int
)ColumnWidths[i], CellHeight));
i
++
;
#endregion
}
tmpTop
+=
CellHeight;
}
RowPos
++
;
//
For the first page it calculates Rows per Page
if
(PageNo
==
1
) RowsPerPage
++
;
#endregion
}
if
(RowsPerPage
==
0
)
return
;
//
Write Footer (Page Number)
DrawFooter(e, RowsPerPage);
e.HasMorePages
=
false
;
}
catch
(Exception ex)
{
MessageBox.Show(ex.Message,
"
Error
"
, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private
static
void
DrawFooter(System.Drawing.Printing.PrintPageEventArgs e,
int
RowsPerPage)
{
double
cnt
=
0
;
//
Detemining rows number to print
if
(PrintAllRows)
{
if
(dgvPrint.Rows[dgvPrint.Rows.Count
-
1
].IsNewRow)
cnt
=
dgvPrint.Rows.Count
-
2
;
//
When the DataGridView doesn't allow adding rows
else
cnt
=
dgvPrint.Rows.Count
-
1
;
//
When the DataGridView allows adding rows
}
else
cnt
=
dgvPrint.SelectedRows.Count;
//
Writing the Page Number on the Bottom of Page
string
PageNum
=
"
第
"
+
PageNo.ToString()
+
"
页，共
"
+
Math.Ceiling((
double
)(cnt
/
RowsPerPage)).ToString()
+
"
页
"
;
e.Graphics.DrawString(PageNum, dgvPrint.Font, Brushes.Black,
e.MarginBounds.Left
+
(e.MarginBounds.Width
-
e.Graphics.MeasureString(PageNum, dgvPrint.Font,
e.MarginBounds.Width).Width)
/
2
, e.MarginBounds.Top
+
e.MarginBounds.Height
+
31
);
}
#endregion
posted on 2010-04-16 11:09
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