[C#]合并单元格(行、列)

説明：控件ID指的是页面上面的GridView控件的ID名称或者是DataGrid控件的ID名称；

            控件类型写GridView或者DataGrid（根据页面控件属于那种就写那种）。

如有疑问请留言。。。。。。。

/// <summary>
/// 合并单元格(合并某一行的所有列)
/// </summary>
/// <param name="id">控件的ID</param>
/// <param name="type">控件类型对象(如写GridView，DataGrid)</param>
/// <param name="rows">需要合并的行</param>
public static void GroupRow(string id,string type, int rows)
{
Control contr = new Control();
TableCell oldTc = null;
switch(type)
{
case "GridView":
GridView GridView1 = (GridView)contr.FindControl(id);
oldTc = GridView1.Rows[rows].Cells[0];
for (int i = 1; i < GridView1.Rows[rows].Cells.Count; i++)
{
TableCell tc = GridView1.Rows[rows].Cells[i];　 //Cells[0]就是你要合并的列
if (oldTc.Text == tc.Text)
{
tc.Visible = false;
if (oldTc.ColumnSpan == 0)
{
oldTc.ColumnSpan = 1;
}
oldTc.ColumnSpan++;
oldTc.VerticalAlign = VerticalAlign.Middle;
}
else
{
oldTc = tc;
}
}
break;
case "DataGrid":
DataGrid DataGrid1 = (DataGrid)contr.FindControl(id);
oldTc = DataGrid1.Items[rows].Cells[0];
for (int i = 1; i < DataGrid1.Items[rows].Cells.Count; i++)
{
TableCell tc = DataGrid1.Items[rows].Cells[i];　 //Cells[0]就是你要合并的列
if (oldTc.Text == tc.Text)
{
tc.Visible = false;
if (oldTc.ColumnSpan == 0)
{
oldTc.ColumnSpan = 1;
}
oldTc.ColumnSpan++;
oldTc.VerticalAlign = VerticalAlign.Middle;
}
else
{
oldTc = tc;
}
}
break;
}
}

/// <summary>
/// 合并单元格(合并一行中的几列)
/// </summary>
/// <param name="id">控件ID</param>
/// <param name="type">控件类型对象(如写GridView，DataGrid)</param>
/// <param name="rows">行</param>
/// <param name="sCol">开始列</param>
/// <param name="eCol">结束列</param>
public static void GroupRow(string id, string type, int rows, int sCol, int eCol)
{
Control contr = new Control();
TableCell oldTc = null;
switch (type)
{
case "GridView":
GridView GridView1 = (GridView)contr.FindControl(id);
oldTc = GridView1.Rows[rows].Cells[sCol];
for (int i = 1; i < eCol - sCol; i++)
{
TableCell tc = GridView1.Rows[rows].Cells[i + sCol];　 //Cells[0]就是你要合并的列
tc.Visible = false;
if (oldTc.ColumnSpan == 0)
{
oldTc.ColumnSpan = 1;
}
oldTc.ColumnSpan++;
oldTc.VerticalAlign = VerticalAlign.Middle;
}
break;
case "DataGrid":
DataGrid DataGrid1 = (DataGrid)contr.FindControl(id);
oldTc = DataGrid1.Items[rows].Cells[sCol];
for (int i = 1; i < eCol - sCol; i++)
{
TableCell tc = DataGrid1.Items[rows].Cells[i + sCol];　 //Cells[0]就是你要合并的列
tc.Visible = false;
if (oldTc.ColumnSpan == 0)
{
oldTc.ColumnSpan = 1;
}
oldTc.ColumnSpan++;
oldTc.VerticalAlign = VerticalAlign.Middle;
}
break;
}
}

/// <summary>
/// 合并单元格(合并某一列所有行)
/// </summary>
/// <param name="id">控件ID</param>
/// <param name="type">控件类型对象(如写GridView，DataGrid)</param>
/// <param name="cols">需要合并的列</param>
public static void GroupCol(string id, string type, int cols)
{
Control contr = new Control();
if (type == "GridView")
{
GridView GridView1 = (GridView)contr.FindControl(id);

if (GridView1.Rows.Count < 1 || cols > GridView1.Rows[0].Cells.Count - 1)
{
return;
}
TableCell oldTc = GridView1.Rows[0].Cells[cols];
for (int i = 1; i < GridView1.Rows.Count; i++)
{
TableCell tc = GridView1.Rows[i].Cells[cols];
if (oldTc.Text == tc.Text)
{
tc.Visible = false;
if (oldTc.RowSpan == 0)
{
oldTc.RowSpan = 1;
}
oldTc.RowSpan++;
oldTc.VerticalAlign = VerticalAlign.Middle;
}
else
{
oldTc = tc;
}
}
}
else
{
DataGrid DataGrid1 = (DataGrid)contr.FindControl(id);

if (DataGrid1.Items.Count < 1 || cols > DataGrid1.Items[0].Cells.Count - 1)
{
return;
}
TableCell oldTc = DataGrid1.Items[0].Cells[cols];
for (int i = 1; i < DataGrid1.Items.Count; i++)
{
TableCell tc = DataGrid1.Items[i].Cells[cols];
if (oldTc.Text == tc.Text)
{
tc.Visible = false;
if (oldTc.RowSpan == 0)
{
oldTc.RowSpan = 1;
}
oldTc.RowSpan++;
oldTc.VerticalAlign = VerticalAlign.Middle;
}
else
{
oldTc = tc;
}
}
}
}

/// <summary>
/// 合并单元格(合并某一列中的某些行)
/// </summary>
/// <param name="id">控件ID</param>
/// <param name="type">控件类型对象(如写GridView，DataGrid)</param>
/// <param name="cols">列</param>
/// <param name="sRow">开始行</param>
/// <param name="eRow">结束列</param>
public static void GroupCol(string id, string type, int cols, int sRow, int eRow)
{
Control contr = new Control();
TableCell oldTc = null;
switch(type)
{
case "GridView":
GridView GridView1 = (GridView)contr.FindControl(id);
if (GridView1.Rows.Count < 1 || cols > GridView1.Columns.Count - 1)
{
return;
}
oldTc = GridView1.Rows[sRow].Cells[cols];
for (int i = 1; i < eRow - sRow; i++)
{
TableCell tc = GridView1.Rows[sRow + i].Cells[cols];
tc.Visible = false;
if (oldTc.RowSpan == 0)
{
oldTc.RowSpan = 1;
}
oldTc.RowSpan++;
oldTc.VerticalAlign = VerticalAlign.Middle;
}
break;
case "DataGrid":
DataGrid DataGrid1 = (DataGrid)contr.FindControl(id);
if (DataGrid1.Items.Count < 1 || cols > DataGrid1.Columns.Count - 1)
{
return;
}
oldTc = DataGrid1.Items[sRow].Cells[cols];
for (int i = 1; i < eRow - sRow; i++)
{
TableCell tc = DataGrid1.Items[sRow + i].Cells[cols];
tc.Visible = false;
if (oldTc.RowSpan == 0)
{

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oldTc.RowSpan = 1;
}
oldTc.RowSpan++;
oldTc.VerticalAlign = VerticalAlign.Middle;
}
break;
default:
break;
}
}