首先我不知道这是否可能,正确的方式去甚至会起作用,但我希望你们能帮助我,我会尽力解释:
我在ASPX页面上有一个GridView控件:
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="True" OnRowDataBound="GridView1_RowDataBound" GridLines="None" CssClass="table table-striped" />
我在代码隐藏中创建了一个DataTable,它包含以下数据并将其绑定到Gridview控件:
-----------------------------------------
| | Name1 | Name2 | Name3 | Name4 |
-----------------------------------------
| Row1 | 1 | 1 | 1 | 1b |
| Row2 | 1a | 2b | 2b | 4b |
| Row3 | 2a | 2c | 2a | 2a |
| Row4 | 1d | 1d | 1d | 4d |
| Row5 | 1e | 1e | 1e | 1e |
| Row6 | 1f | 2f | 3f | 4f |
-----------------------------------------
现在我希望合并匹配的列值并添加适当的colspan。我已经在GridView控件中添加了一个OnRowDataBound,如下所示:
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
if (e.Row.RowIndex >= 0)
{
int colSpanValue = 2;
for (int i = 0; i < e.Row.Cells.Count; i++)
{
if (i+1 < e.Row.Cells.Count)
{
if (e.Row.Cells[i].Text == e.Row.Cells[i + 1].Text)
{
e.Row.Cells[i].BackColor = Color.Beige;
e.Row.Cells[i].ColumnSpan = colSpanValue;
e.Row.Cells[i].HorizontalAlign = HorizontalAlign.Center;
e.Row.Cells[i + 1].Visible = false;
colSpanValue++;
}
}
}
}
}
}
所以上面的数据会是这样的,就像这样。
-----------------------------------------
| | Name1 | Name2 | Name3 | Name4 |
-----------------------------------------
| Row1 | 1 | 1b | <!-- problem
| Row2 | 1a | 2b | 4b |
| Row3 | 2a | 2c | 2a | <!-- problem
| Row4 | 1d | 4d |
| Row5 | 1e |
| Row6 | 1f | 2f | 3f | 4f |
-----------------------------------------
然而,这并不是我想要看到的,但是可能会因为OnRowDataBound代码块可能没有做到这一点。
所以我的问题是:
所以理想的结果是这样的:
-----------------------------------------
| | Name1 | Name2 | Name3 | Name4 |
-----------------------------------------
| Row1 | 1 | 1b | <!-- problem
| Row2 | 1a | 2b | 4b |
| Row3 | 2a | 2c | 2a | <!-- problem
| Row4 | 1d | 4d |
| Row5 | 1e |
| Row6 | 1f | 2f | 3f | 4f |
-----------------------------------------
更新信息
根据 ConnorsFan 和 fnostro 提供的答案更新代码后,两个答案都是正确无误的,感谢您的帮助。 我选择ConnorsFan的方法,因为我还在学习。
collspan现在是正确的,见下面的截图:
我会尝试 fnostro的建议通过DataTable管理排序部分并将数据重新绑定到GridView1并让你发布。再次感谢你的回答。
答案 0 :(得分:2)
你可以试试这个:
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
for (int i = 0; i < e.Row.Cells.Count - 1; i++)
{
TableCell cell = e.Row.Cells[i];
if (cell.Visible)
{
int colSpanValue = 1;
for (int j = i + 1; j < e.Row.Cells.Count; j++)
{
TableCell otherCell = e.Row.Cells[j];
if (otherCell.Text == cell.Text)
{
colSpanValue++;
otherCell.Visible = false;
}
else
{
break;
}
}
if (colSpanValue > 1)
{
cell.ColumnSpan = colSpanValue;
cell.BackColor = Color.Beige;
cell.HorizontalAlign = HorizontalAlign.Center;
}
}
}
}
}
答案 1 :(得分:0)
关于排序。最好在DataTable中管理排序,然后简单地重新绑定到GridView
以下是我如何修改RowDataBound事件以合并数据:
protected void GridView1_RowDataBound( object sender, GridViewRowEventArgs e )
{
if ( e.Row.RowType == DataControlRowType.DataRow )
{
// loop through cells and track span index (si)
for ( int i = 0, si = 0; i < e.Row.Cells.Count; si = i)
{
// compare adjacent cells for like data and hide as needed
while ( ++i < e.Row.Cells.Count && e.Row.Cells[ si ].Text == e.Row.Cells[ i ].Text )
e.Row.Cells[ i ].Visible = false;
// set span and, conditionally, special formatting
if ( ( e.Row.Cells[ si ].ColumnSpan = ( i - si ) ) > 1 )
{
e.Row.Cells[ si ].BackColor = Color.Beige;
e.Row.Cells[ si ].HorizontalAlign = HorizontalAlign.Center;
}
}
}
}