The multilevel table header (posted by netizens) of the DataGrid under ASP. NET is selected from the blog of yoyo83.

Multi-layer table header of the DataGrid under ASP. NET

[From: csdn]

See the following table first:

ASP. the DataGrid under net is just an htmltable, but adds a lot of attributes and methods on the basis of htmltable to be incorporated into the viewstate mechanism to generate and control it. With this understanding, it's easy to do:

We can define the column header in the property generator. It is actually just an HTML tag with "</TD> <TD>" inserted between columns; therefore, based on the example above, you can enter the following content in the header in column 3rd: </TD> </tr> <TD> Beijing </TD> <TD> Shanghai </TD> <TD> Shenzhen </TD> </tr> ", at this time, you will find that the two-layer header appears:

But it is not enough because we still need to merge rows and columns.
We can process it in the itemdatabound event of the DataGrid.

If (E. Item. itemtype = listitemtype. header)
{
E. Item. cells [0]. rowspan = 2;
E. Item. cells [1]. columnspan = 3;
E. Item. cells [2]. Visible = false;
E. Item. cells [3]. Visible = false;

Multi-layer table header of the DataGrid under ASP. NET

[From: csdn]

See the following table first:

ASP. the DataGrid under net is just an htmltable, but adds a lot of attributes and methods on the basis of htmltable to be incorporated into the viewstate mechanism to generate and control it. With this understanding, it's easy to do:

We can define the column header in the property generator. It is actually just an HTML tag with "</TD> <TD>" inserted between columns; therefore, based on the example above, you can enter the following content in the header in column 3rd: </TD> </tr> <TD> Beijing </TD> <TD> Shanghai </TD> <TD> Shenzhen </TD> </tr> ", at this time, you will find that the two-layer header appears:

But it is not enough because we still need to merge rows and columns.
We can process it in the itemdatabound event of the DataGrid.

If (E. Item. itemtype = listitemtype. header)
{
E. Item. cells [0]. rowspan = 2;
E. Item. cells [1]. columnspan = 3;
E. Item. cells [2]. Visible = false;
E. Item. cells [3]. Visible = false;