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How to calculate cell height [that has long text] when printing DataGridView in C#

I searched but didn't find how to set the cell height when printing DataGridView when the cell has long text.
I didn't find one result that concentrate how to calculate the height with long text. And I don't want to use 3rd party DLL file that print it with right cell height.
I use this code to calculate the height but text always cut and short text has lower cell height that on DGV.
var tallestHeight = 0;
foreach (DataGridViewCell cell in GridRow.Cells)
{
if (!cell.Visible) { continue; }
var s = e.Graphics.MeasureString(cell.FormattedValue.ToString(), dataGridView1.Font);
var tempHeight = (int)(s.Height * Math.Ceiling(s.Width / dataGridView1.Columns[cell.ColumnIndex].Width));
if (tempHeight > tallestHeight)
{
tallestHeight = tempHeight;
}
tallestHeight = (tallestHeight < 22) ? 22 : tallestHeight;
}
iCellHeight = tallestHeight;
I want when I print DataGridView to printer to show all the text in all cells without cutting. Long text increase the row height and if no long text row's height stays unchanged.
I have row height = 22
Text wrap for my DataGridView is enabled
Edit1:
Here is my DataGridView properties
Here is how i print my DataGridView: PrintDGV Class that i use
My DGV appears
Print preview
Yellow highlighted text isn't complete Full text is First Middle lastname- some text- 0130011511478- تجربةة 7427/01300/8346584584563846
The text below it complete.
How to show the first row at full?

Apart from the grid settings, you need to use the output sizes to calculate the adequate height of each row to fit their contents. Also, calling a MeasureString method overload that takes StringFormat is necessary to get more accurate result.
I see in the printout image above you are dividing the MarginBounds.Width by the visible cells. Thus, the following:
Calculate
Create a method to calculate and return the proper height of each row.
// +
using System.Linq;
private int GetRowHeight(
Graphics g,
DataGridViewRow row,
Rectangle bounds,
StringFormat sf,
int minHeight = 22)
{
var cells = row.Cells.OfType<DataGridViewTextBoxCell>()
.Where(c => c.Visible);
if (cells == null) return minHeight;
var cell = cells.Aggregate((DataGridViewTextBoxCell)null, (x, y) => x != null &&
x.FormattedValue.ToString().Length > y.FormattedValue.ToString().Length ? x : y);
if (cell == null) return minHeight;
var h = g.MeasureString(cell.FormattedValue.ToString(),
row.DataGridView.Font,
new SizeF(bounds.Width / cells.Count(), bounds.Height),
sf).ToSize().Height;
return Math.Max(h + 6, minHeight); // 6 for top and bottom margins...
}
Call
Caller example and class variables to track the printing...
// +
using System.Drawing.Printing;
private int rowIndex;
private int cellCount;
private int pageNumber;
private readonly PrintDocument printDoc;
// ...
// ctor
public YourForm()
{
InitializeComponent();
printDoc = new PrintDocument();
printDoc.PrintPage += OnPrintPage;
}
// Cleanup
private void YourForm_FormClosed(object sender, FormClosedEventArgs e)
{
printDoc.Dispose();
}
// Preview
private void btnPrintPreview(object sender, EventArgs e) => Print(true);
// Print
private void btnPrint(object sender, EventArgs e) => Print();
// Print Routine
private void Print(bool preview = false)
{
rowIndex = 0;
cellCount = 0;
pageNumber = 0;
var rows = dataGridView1.Rows
.Cast<DataGridViewRow>()
.FirstOrDefault(r => !r.IsNewRow);
if (rows != null)
cellCount = rows.Cells
.OfType<DataGridViewTextBoxCell>()
.Where(c => c.Visible)
.Count();
if (cellCount == 0)
{
MessageBox.Show("Nothing to print...");
return;
}
printDoc.DefaultPageSettings.Landscape = true;
if (preview)
{
using (var pd = new PrintPreviewDialog())
{
pd.Document = printDoc;
pd.ShowDialog();
}
}
else
{
using (var pd = new PrintDialog())
{
pd.Document = printDoc;
if (pd.ShowDialog() == DialogResult.OK)
pd.Document.Print();
}
}
}
Print
PrintDocument.PrintPage event example.
// +
using System.Drawing.Text;
private void OnPrintPage(object sender, PrintPageEventArgs e)
{
var w = e.MarginBounds.Width / cellCount;
var x = e.MarginBounds.X;
var y = e.MarginBounds.Y;
int h;
Rectangle rec;
using (var sf = new StringFormat())
{
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Center;
// Maybe you need to set this? I see Arabic text in the images.
// sf.FormatFlags = StringFormatFlags.DirectionRightToLeft;
e.Graphics.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
// Uncomment to print the headers in the first page only.
//if (pageNumber == 0)
//{
h = dataGridView1.RowTemplate.Height;
foreach (var col in dataGridView1.Columns
.OfType<DataGridViewTextBoxColumn>()
.Where(c => c.Visible))
{
rec = new Rectangle(x, y, w, h);
e.Graphics.FillRectangle(Brushes.Gainsboro, rec);
e.Graphics.DrawString(
col.HeaderText,
col.DataGridView.Font,
Brushes.Black,
rec,
sf);
e.Graphics.DrawRectangle(Pens.Black, rec);
x += w;
}
x = e.MarginBounds.X;
y += h;
//}
for (var i = rowIndex; i < dataGridView1.RowCount; i++)
{
var row = dataGridView1.Rows[i];
if (row.IsNewRow) break;
h = GetRowHeight(e.Graphics, row, e.MarginBounds, sf);
if (h > e.MarginBounds.Height)
{
MessageBox.Show("Insufficient height.");
e.Cancel = true;
return;
}
foreach (var cell in row.Cells
.OfType<DataGridViewTextBoxCell>()
.Where(c => c.Visible))
{
rec = new Rectangle(x, y, w, h);
if (rec.Bottom > e.MarginBounds.Bottom)
{
pageNumber++;
rowIndex = i;
e.HasMorePages = true;
return;
}
e.Graphics.DrawString(
cell.FormattedValue.ToString(),
dataGridView1.Font,
Brushes.Black,
rec,
sf);
e.Graphics.DrawRectangle(Pens.Black, rec);
x += rec.Width;
}
x = e.MarginBounds.X;
y += h;
}
}
}
Output

merging columns in datagridview in c#

i have a datagridview on my c# winforms and i want to merge some columns to enter data on it. how will i do that?
i tried some codes from the the net but there are errors and it says: No overload for datagridviewCellPainting that matches the delegate for event handler.
this is my code:
private void General_Inventory_Load(object sender, EventArgs e)
{
dgvGenInventory.Columns.Add("JanWin", "Win");
dgvGenInventory.Columns.Add("JanLoss", "Loss");
dgvGenInventory.Columns.Add("FebWin", "Win");
dgvGenInventory.Columns.Add("FebLoss", "Loss");
dgvGenInventory.Columns.Add("MarWin", "Win");
dgvGenInventory.Columns.Add("MarLoss", "Loss");
dgvGenInventory.Columns.Add("AprWin", "Win");
dgvGenInventory.Columns.Add("AprLoss", "Loss");
dgvGenInventory.Rows.Add("1", "2", "3", "2", "2", "2", "4", "2");
for (int i = 0; i < dgvGenInventory.ColumnCount - 1; i++)
{
dgvGenInventory.Columns[i].Width = 45;
}
this.dgvGenInventory.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.EnableResizing;
this.dgvGenInventory.ColumnHeadersHeight = this.dgvGenInventory.ColumnHeadersHeight * 2;
this.dgvGenInventory.ColumnHeadersDefaultCellStyle.Alignment = DataGridViewContentAlignment.BottomCenter;
this.dgvGenInventory.CellPainting += new DataGridViewCellPaintingEventHandler(dgvGenInventory_CellPainting);
this.dgvGenInventory.Paint += new PaintEventHandler(dgvGenInventory_Paint);
this.dgvGenInventory.Scroll += new ScrollEventHandler(dgvGenInventory_Scroll);
this.dgvGenInventory.ColumnWidthChanged += new DataGridViewColumnEventHandler(dgvGenInventory_ColumnWidthChanged);
}
private void dgvGenInventory_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
{
if (e.RowIndex == -1 && e.ColumnIndex > -1)
{
Rectangle r2 = e.CellBounds;
r2.Y += e.CellBounds.Height / 2;
r2.Height = e.CellBounds.Height / 2;
e.PaintBackground(r2, true);
e.PaintContent(r2);
e.Handled = true;
}
}
I want to see merged columns on my datagridview

I think, it will be better if you merge data in table first and then bind DataGridview to that table.
try this:
private void Form1_Load(object sender, EventArgs e)
{
m_BuildGrid();
}
private void m_BuildGrid()
{
DataGridViewColumn pColumn;
int i, j;
String strTemp;
HMergedCell pCell;
int nOffset;
dataGridView2.Columns.Add(#"colGroup", #"");
dataGridView2.Columns.Add(#"colTask", #"Task");
pColumn = dataGridView2.Columns["colTask"];
pColumn.Frozen = true;
for (i = 0; i < 25; i++)
{
strTemp = "col" + i.ToString();
dataGridView2.Columns.Add(#strTemp, i.ToString());
pColumn = dataGridView2.Columns[strTemp];
pColumn.SortMode = DataGridViewColumnSortMode.NotSortable;
pColumn.Width = 40;
}
dataGridView2.Rows.Add(20);
nOffset = 2;
for (i = 0; i < 3; i++)
{
for (j = nOffset; j < nOffset + 7; j++)
{
dataGridView2.Rows[0].Cells[j] = new HMergedCell();
pCell = (HMergedCell)dataGridView2.Rows[0].Cells[j];
pCell.LeftColumn = nOffset;
pCell.RightColumn = nOffset + 6;
}
nOffset += 7;
}
for (i = 0; i < 20; i++)
for (j = 0; j < 22; j++)
{
dataGridView2.Rows[i].Cells[j].Value = "{" + i.ToString() + "," + j.ToString() + "}";
}
pColumn = null;
}
}
and add this class to your project
public class HMergedCell : DataGridViewTextBoxCell
{
private int m_nLeftColumn = 0;
private int m_nRightColumn = 0;
/// <summary>
/// Column Index of the left-most cell to be merged.
/// This cell controls the merged text.
/// </summary>
public int LeftColumn
{
get
{
return m_nLeftColumn;
}
set
{
m_nLeftColumn = value;
}
}
/// <summary>
/// Column Index of the right-most cell to be merged
/// </summary>
public int RightColumn
{
get
{
return m_nRightColumn;
}
set
{
m_nRightColumn = value;
}
}
protected override void Paint(Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex, DataGridViewElementStates cellState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)
{
try
{
int mergeindex = ColumnIndex - m_nLeftColumn;
int i;
int nWidth;
int nWidthLeft;
string strText;
Pen pen = new Pen(Brushes.Black);
// Draw the background
graphics.FillRectangle(new SolidBrush(SystemColors.Control), cellBounds);
// Draw the separator for rows
graphics.DrawLine(new Pen(new SolidBrush(SystemColors.ControlDark)), cellBounds.Left, cellBounds.Bottom - 1, cellBounds.Right, cellBounds.Bottom - 1);
// Draw the right vertical line for the cell
if (ColumnIndex == m_nRightColumn)
graphics.DrawLine(new Pen(new SolidBrush(SystemColors.ControlDark)), cellBounds.Right - 1, cellBounds.Top, cellBounds.Right - 1, cellBounds.Bottom);
// Draw the text
RectangleF rectDest = RectangleF.Empty;
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Center;
sf.LineAlignment = StringAlignment.Center;
sf.Trimming = StringTrimming.EllipsisCharacter;
// Determine the total width of the merged cell
nWidth = 0;
for (i = m_nLeftColumn; i <= m_nRightColumn; i++)
nWidth += this.OwningRow.Cells[i].Size.Width;
// Determine the width before the current cell.
nWidthLeft = 0;
for (i = m_nLeftColumn; i < ColumnIndex; i++)
nWidthLeft += this.OwningRow.Cells[i].Size.Width;
// Retrieve the text to be displayed
strText = this.OwningRow.Cells[m_nLeftColumn].Value.ToString();
rectDest = new RectangleF(cellBounds.Left - nWidthLeft, cellBounds.Top, nWidth, cellBounds.Height);
graphics.DrawString(strText, new Font("Arial", 10, FontStyle.Regular), Brushes.Black, rectDest, sf);
}
catch (Exception ex)
{
Trace.WriteLine(ex.ToString());
}
}
}

I spent a long time looking for this as my boss didn't want to buy any off-the-shelf components. This should be submitted into the .NET code: datagridvewtextboxcell-with-span-behaviour It just works and is soo simple to use. Works with VB/C# .NET 4.5 to 6. Spans rows and columns including headers.
DataGridView.Columns.Add(new DataGridViewTextBoxColumnEx());
var dataGridViewCell = (DataGridViewTextBoxCellEx)DataGridView[colIdx, rowIdx];
dataGridViewCell.ColSpan = 2;
dataGridViewCell.RowSpan = 6;

Design an algorithm for guessing a card number

I am making a card guessing game.there are 100 cards place in 10rows and 10 columns each card with a number and user have to find a number he is thinking of. i want to devise an algorithm to determine whether a given number is written on one of the cards by turning up less than 20 cards.I hav created the buttons dynamically, now im having hard time making a logic to search through them.This is my code.
namespace WindowsFormsApplication3
{
public partial class Form1 : Form
{
int rememberlast = 0, move = 0;
object savelastobject;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
int sizee = 50, where = 0;
this.Height = 0;
this.Width = 0;
var generatedNum = new List<int>();
var random = new Random();
while (generatedNum.Count < 100)
{
var tempo = random.Next(0, 100);
if (generatedNum.Contains(tempo)) continue;
generatedNum.Add(tempo);
}
char[] text2 = text.ToCharArray();
for (int x = 0; x < 10; x++)
{
for (int y = 0; y < 10; y++)
{
Button ta = new Button();
ta.Name = x.ToString()+y.ToString();
ta.Width = sizee;
ta.Height = sizee;
ta.Tag = generatedNum[where];
where++;
ta.BackColor = Color.Red;
ta.Location = new Point(70 * y, 70 * x);
Controls.Add(ta);
ta.Click += new System.EventHandler(this.button_Click);
this.Width += 90 * x / 13;
this.Height += 90 * x / 8;
}
}
}
private void button_Click(object sender, EventArgs e)
{
Control me = (Control)sender;
rememberlast = int.Parse(me.Tag.ToString());
savelastobject = me;
me.Text = me.Tag.ToString();
me.Enabled = true;
me.BackColor = Color.Gray;
move++;
label2.Text = move.ToString();
me.Enabled = true;
me.Text = me.Tag.ToString();
me.BackColor = Color.Gray;
me.Refresh();
Thread.Sleep(1000);
if (move == 20)
{
MessageBox.Show("Total Moves Consumed");
Application.Restart();
}
if (me.Tag.ToString() == textBox1.Text)
{
//Control him = (Control)savelastobject;
//him.BackColor = Color.LightBlue;
me.BackColor = Color.LightBlue;
MessageBox.Show("You Win");
Application.Restart();
}
}
}
}

print marigin not set in second page

private StringReader myReader;
private void printToolStripMenuItem_Click(object sender, EventArgs e)
{
printDialog1.Document = printDocument1;
string strText = this.richTextBox1.Text;
myReader = new StringReader(strText);
if (printDialog1.ShowDialog() == DialogResult.OK)
{
printDocument1.Print();
}
}
private void printPrieviewToolStripMenuItem_Click(object sender, EventArgs e)
{
string strText = this.richTextBox1.Text;//read text for richtextbox
myReader = new StringReader(strText);
printPreviewDialog1.Document = printDocument1;
printPreviewDialog1.ShowDialog();
}
private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
string line = null;
Font printFont = new System.Drawing.Font("Times New Roman", 8, FontStyle.Regular);
SolidBrush myBrush = new SolidBrush(Color.Black);
float linesPerPage = 0;
float topMargin = 590;
float yPosition = 590;
int count = 0;
float leftMargin = 70;
linesPerPage = e.MarginBounds.Height / printFont.GetHeight(e.Graphics);
while (count < linesPerPage && ((line = myReader.ReadLine()) != null))
{
if (count == 0)
{
yPosition = 590;
topMargin = 590;
}
else
{
yPosition = 100;
topMargin = 100;
}
yPosition = topMargin + (count * printFont.GetHeight(e.Graphics));
e.Graphics.DrawString(line, printFont, myBrush, leftMargin, yPosition, new StringFormat());
count++;
}
if (line != null)
{
e.HasMorePages = true;
}
else
{
e.HasMorePages = false;
myBrush.Dispose();
}
}
}
}
please where is my mistake.i want to print first page is top marigin is 590,and if more pages second page should be print top marigin is 100.
above given code is printing is ok but print marigin is not solved
help me the corection.

You are setting top margin based on count but count is not a page count, it is a line count. you need to keep a page count and use that.

Use a field to hold if it's the first page, remember to set it to true before calling printDocument1_PrintPage e.g:
bool Isfirstpage = true;
private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
///.....
if (count == 0 && Isfirstpage)
{
yPosition = 590;
topMargin = 590;
Isfirstpage = false;
}
///....

Trying to create a new page when horizontal pos. of i extends past right margin

I am trying add a page when horizontal or the x position is greater than a counter in order to keep a right side margin. When I run the code I end up in an infinate loop of hundreds of pages all displaying the same first page graphics. Thinking it might have to do with my lack of understanding HasMorePages. I could use some help. Thanks.
public static class PrintWave
{
public static void PrintPreWave()
{
PrintDocument pd = new PrintDocument();
if (WaveTools.MySettings == null)
{
pd.DefaultPageSettings.Landscape = true;
}
else
{
pd.DefaultPageSettings = WaveTools.MySettings;
}
pd.OriginAtMargins = true;
pd.PrintPage += new PrintPageEventHandler(OnPrintPage);
PrintDialog dlg = new PrintDialog();
PrintPreviewDialog printPreviewDlg = new PrintPreviewDialog();
printPreviewDlg.Document = pd;
Form p = (Form)printPreviewDlg;
p.WindowState = FormWindowState.Maximized;
printPreviewDlg.ShowDialog();
}
private static void OnPrintPage(object sender, PrintPageEventArgs e)
{
string MyTag = string.Empty;
MyTag = WaveActions.ActiveId;
Wave MyWave = WaveHolder.FindWave(MyTag);
int MyCount = 0;
int xOffset = e.MarginBounds.Location.X;
int yOffset = e.MarginBounds.Location.Y;
if (MyWave != null)
{
Graphics g = e.Graphics;
g.SetClip(e.PageBounds);
Pen MyPen = new Pen(WaveTools.WaveColor, WaveTools.PenWidth);
float dx = (float)e.PageBounds.Width / MyWave.NumSamples;
float dy = (float)e.PageBounds.Height / 255;
if (MyWave.Normal == false)
{
g.ScaleTransform(dx, dy);
}
for (int i = 0; i < MyWave.NumSamples - 1; i++)
{
g.DrawLine(MyPen, i, MyWave.Data[i], i + 1, MyWave.Data[i + 1]);
MyCount = MyCount + 1;
if (MyCount > e.MarginBounds.Width)
{
e.HasMorePages = true;
MyCount = 0;
return;
}
else
{
e.HasMorePages = false;
return;
}
}
}
}
}
}

for (int i = 0; i < MyWave.NumSamples - 1; i++)
That's the core problem statement, you start at 0 every time PrintPage gets called. You need to resume where you left off on the previous page. Make the i variable a field of your class instead of a local variable. Implement the BeginPrint event to set it to zero.
The else clause inside the loop need to be deleted.