Winform怎样添加统计行并合并单元格

[yth126]

如下图：

我要的是Winform的，不是Web版

[yth126]

[code=HTML]
code]

[yth126]

为什么不能显示图片？

[纯唇Yu弄]

//把下面  
 //#region 添加DataGridView底行合计数 的四个方法  和  #endregion  添加DataGridView底行合计数 的四//个方法之间的 代码拷贝到你的程序中

//然后再 给要计算合计的 DataGridView 对象(此处假定为dataGridView1) 绑定 下面的方法及 数据表  则可:

//这里假设通过点击 按钮 之后 绑定

private void button1_Click(object sender, EventArgs e)
  {

     dataGridView1.DataSourceChanged += new EventHandler(dataGridView_DataSourceChanged);
   dataGridView1.ColumnHeaderMouseClick += new DataGridViewCellMouseEventHandler(dataGridView_ColumnHeaderMouseClick);
   dataGridView1.CellValueChanged += new DataGridViewCellEventHandler(dataGridView_CellValueChanged);
   dataGridView1.AllowUserToAddRows = false;
   dataGridView1.DataSource = 这里是要绑定的数据表;

  }

 

#region 添加DataGridView底行合计数 的四个方法
  /// <summary>
  /// 计算合计算
  /// </summary>
  /// <param >要计算的DataGridView</param>
  private void SumDataGridView(DataGridView dgv)
  {

   #region 计算合计数
   //DataGridView dgv = (DataGridView)sender;
   if (dgv.DataSource == null) return;
   DataTable dt = (DataTable)dgv.DataSource;
   if (dt.Rows.Count < 1) return;
   decimal[] tal = new decimal[dt.Columns.Count];

   DataRow ndr = dt.NewRow();

   string talc = "";

   int number = 1;
   foreach (DataRow dr in dt.Rows)
   {
    dr["@xu.Hao"] = number++;
    int n = 0;
    foreach (DataColumn dc in dt.Columns)
    {


     if (talc == "" && dc.DataType.Name.ToUpper().IndexOf("STRING") >= 0) talc = dc.ColumnName;


     if (dc.DataType.IsValueType)
     {
      string hej = dr[dc.ColumnName].ToString();
      try
      {
       if (hej != string.Empty) tal[n] += decimal.Parse(hej);
      }
      catch (Exception) { }
      //if (hej != string.Empty) tal[n] += decimal.Parse(hej);
     }


     n++;
    }
   }

   ndr.BeginEdit();
   for (int i = 0; i < dt.Columns.Count; i++)
   {
    if (tal[i] != 0)
     ndr[i] = tal[i];
   }
   ndr["@xu.Hao"] = ((int)(dt.Rows.Count + 1)).ToString();
   if (talc != "") ndr[talc] = "[合计]";
   ndr.EndEdit();
   dt.Rows.Add(ndr);

   dgv.Rows[dgv.Rows.Count - 1].DefaultCellStyle.BackColor = Color.FromArgb(255, 255, 210);


   if (dgv.Tag == null)
   {
    foreach (DataGridViewColumn dgvc in dgv.Columns)
    {
     dgvc.SortMode = DataGridViewColumnSortMode.Programmatic;
    }
   }


   dgv.Tag = ndr;

   #endregion


  }
  private void dataGridView_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
  {//
   //直接拷贝代码

   DataGridView sortDgv = (DataGridView)sender;
   int fx = 0;
   if (sortDgv.AccessibleDescription == null)
   {
    fx = 1;
   }
   else
   {
    fx = int.Parse(sortDgv.AccessibleDescription);
    fx = (fx == 0 ? 1 : 0);
   }
   sortDgv.AccessibleDescription = fx.ToString();
   if (sortDgv.Columns[e.ColumnIndex].Name == "@xu.Hao") return;
   DataGridViewColumn nCol = sortDgv.Columns[e.ColumnIndex];

   if (nCol.DataPropertyName == string.Empty) return;

   if (nCol != null)
   {
    sortDgv.Sort(nCol, fx == 0 ? ListSortDirection.Ascending : ListSortDirection.Descending);

   }
   //--
   DataRow dr = (DataRow)sortDgv.Tag;
   DataTable dt = (DataTable)sortDgv.DataSource;
   DataRow ndr = dt.NewRow();
   ndr.BeginEdit();
   for (int i = 0; i < dt.Columns.Count; i++)
   {
    ndr[i] = dr[i];
   }
   dt.Rows.Remove(dr);


   //if (e.ColumnIndex != 0)
   {
    int n = 1;
    for (int i = 0; i < sortDgv.Rows.Count; i++)
    {
     DataGridViewRow dgRow = sortDgv.Rows[i];
     DataRowView drv = (DataRowView)dgRow.DataBoundItem;
     DataRow tdr = drv.Row;
     tdr.BeginEdit();
     tdr["@xu.Hao"] = n;
     n++;
     tdr.EndEdit();

    }
    sortDgv.Refresh();
    sortDgv.RefreshEdit();

   }
   ndr["@xu.Hao"] = ((int)(dt.Rows.Count + 1)).ToString();
   ndr.EndEdit();
   dt.Rows.Add(ndr);
   sortDgv.Tag = ndr;

   //--
   sortDgv.Sort(sortDgv.Columns["@xu.Hao"], ListSortDirection.Ascending);
   sortDgv.Columns["@xu.Hao"].HeaderCell.SortGlyphDirection = SortOrder.None;
   nCol.HeaderCell.SortGlyphDirection = fx == 0 ? SortOrder.Ascending : SortOrder.Descending;
   sortDgv.Rows[sortDgv.Rows.Count - 1].DefaultCellStyle.BackColor = Color.FromArgb(255, 255, 210);

  }
  private void dataGridView_DataSourceChanged(object sender, EventArgs e)
  {
   DataGridView dgv = (DataGridView)sender;
   DataTable dt = (DataTable)dgv.DataSource;
   if (dt == null) return;
   decimal[] tal = new decimal[dt.Columns.Count];
   if (dt.Columns.IndexOf("@xu.Hao") < 0)
   {
    DataColumn dc = new DataColumn("@xu.Hao", System.Type.GetType("System.Int32"));
    dt.Columns.Add(dc);
    dgv.Columns["@xu.Hao"].DisplayIndex = 0;
    dgv.Columns["@xu.Hao"].HeaderText = "#";

    dgv.Columns["@xu.Hao"].SortMode = DataGridViewColumnSortMode.Programmatic;
    dgv.AutoResizeColumn(dgv.Columns["@xu.Hao"].Index);　

    dgv.Columns["@xu.Hao"].DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
   }
   SumDataGridView(dgv);
  }
  private void dataGridView_CellValueChanged(object sender, DataGridViewCellEventArgs e)
  {//
   DataGridView dgv = (DataGridView)sender;
   if (dgv.Tag == null || e.RowIndex < 0 || e.RowIndex == dgv.Rows.Count - 1) return;

   string col = dgv.Columns[e.ColumnIndex].DataPropertyName;
   if (col == string.Empty) return;
   if (((DataRowView)dgv.Rows[e.RowIndex].DataBoundItem).Row.Table.Columns[col].DataType.IsValueType)
   {
    decimal tal = 0;
    foreach (DataGridViewRow dgvr in dgv.Rows)
    {
     if (dgvr.Index != dgv.Rows.Count - 1)
     {
      string hej = dgvr.Cells[e.ColumnIndex].Value.ToString();
      if (hej != string.Empty) tal += decimal.Parse(hej);
     }
    }
    if (tal == 0)
     dgv[e.ColumnIndex, dgv.Rows.Count - 1].Value = DBNull.Value;
    else
     dgv[e.ColumnIndex, dgv.Rows.Count - 1].Value = tal;
   }
  }
  #endregion  添加DataGridView底行合计数 的四个方法

[wuyq11]

合并
private void dataGridView1_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)

if (e.ColumnIndex == 0 && e.RowIndex != -1)
{
using
(
Brush gridBrush = new SolidBrush(this.dataGridView1.GridColor),
backColorBrush = new SolidBrush(e.CellStyle.BackColor)
)
{
using (Pen gridLinePen = new Pen(gridBrush))
{
e.Graphics.FillRectangle(backColorBrush, e.CellBounds);
if (e.RowIndex < dataGridView1.Rows.Count - 1 &&
dataGridView1.Rows[e.RowIndex + 1].Cells[e.ColumnIndex].Value.ToString() !=
e.Value.ToString())
e.Graphics.DrawLine(gridLinePen, e.CellBounds.Left,
e.CellBounds.Bottom - 1, e.CellBounds.Right - 1,
e.CellBounds.Bottom - 1);
e.Graphics.DrawLine(gridLinePen, e.CellBounds.Right - 1,
e.CellBounds.Top, e.CellBounds.Right - 1,
e.CellBounds.Bottom);
if (e.Value != null)
{
if (e.RowIndex > 0 &&
dataGridView1.Rows[e.RowIndex - 1].Cells[e.ColumnIndex].Value.ToString() ==
e.Value.ToString())
{ }
else
{
e.Graphics.DrawString((String)e.Value, e.CellStyle.Font,
Brushes.Black, e.CellBounds.X + 2,
e.CellBounds.Y + 5, StringFormat.GenericDefault);
}
}
e.Handled = true;
}
}
}
http://topic.csdn.net/u/20100609/13/4d9006e4-529e-4b30-91ae-9908f5806c58.html