Asp. The implementation method of the GridView repeating table column merging in net _ practical tips

These days to do a project useful to the table to display data where the customer requested a duplicate data column needs to be merged, summed up the GridView and Repeater about the method of data merge.

The effect chart is as follows:

Gridview:

Foreground code:

<div> <asp:gridview id= "gvincome" runat= "Server" autogeneratecolumns= "False" > <Columns> <asp: TemplateField headertext= "Level" > <ItemTemplate> <asp:label id= "Label0" runat= "server" text= ' <% #Eval (" Aname ")%> ' ></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:templatefield Headertext= "Level Two" > <ItemTemplate> <asp:label id= "Label1" runat= "server" text= ' <% #Eval ("bname")%> '
></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:templatefield headertext= "Level three" > <ItemTemplate> <asp:label id= "Label2" runat= "server" text= ' <% #Eval ("CNAME")%> ' ></asp:label > </ItemTemplate> </asp:TemplateField> <asp:templatefield headertext= "level four" > <itemtemplate > <asp:label id= "Label3" runat= "server" text= ' <% #Eval ("dname")%> ' ></asp:Label> </ itemtemplate> </asp:TemplateField> </Columns> </asp:GridView> </div> GridView Front Code 

<span style= "line-height:1.5; Font-family:verdana, Arial, Helvetica, Sans-serif; font-size:14px; Background-color:rgb (255, 255, 255); > </span>

Background code:

public void DataBind () {String sql = ' Select A.aname,b.bname,c.cname, d.dname from AA to right join BB as B on a.aid=b
. Aid right Join CC as C on b.bid=c.bid left join DD as D on D.cid=c.cid order by A.aid ";
SqlDataAdapter SDA = new SqlDataAdapter (SQL, CN);
DataSet ds = new DataSet (); Sda.
Fill (DS);
Gvincome.datasource = ds;
Gvincome.databind ();
Mergerows (Gvincome.headerrow, GvIncome.Rows.Count); int colnum = GvIncome.Columns.Count; Gets the number of columns fetched in the GridView Mergerows (Gvincome, 4, "Label"); The number of columns to be consolidated by the GridView need to be changed lable control} public static void Mergerows (GridView GVW, int colnum, string Controlnameo) {for (int c OL = 0; Col < Colnum; col++)//Traverse each column {string controlname = Controlnameo + col. ToString (); Gets the lable control ID for (int rowIndex = GVW) that the current column needs to change. Rows.count-2; RowIndex >= 0; rowindex--)//gridview Gets the number of rows and traverses each row {gridviewrow row = GVW. Rows[rowindex]; Gets the current row gridviewrow Previousrow = GVW. Rows[rowindex + 1]; Gets the top line Label row_lbl = row in the current row. Cells[col]. FindControl (controlname) as LaBel Gets the text Label PREVIOUSROW_LBL = Previousrow.cells[col] of the lable control ID for the current row of the current column. FindControl (controlname) as Label; Gets the text if (row_lbl!= null && previousrow_lbl!= null) of the previous row of the current column's lable control ID//If the ID of the lable to be changed on the current row and the previous line The text is not empty {if (ROW_LBL). Text = = Previousrow_lbl. Text)///If the current row and the ID of the lable you want to change are not empty and the same {//when the current cell in the row (the number of rows spanned by the cell). The default value of 0 is equal to the number of rows across the current cell in the next row and is less than one return of 2 otherwise, the number of rows in the current cell of the previous row is +1 row. Cells[col]. RowSpan = Previousrow.cells[col]. RowSpan < 1? 2:previousrow.cells[col].
RowSpan + 1; And let the current cell of the previous row not display Previousrow.cells[col].
Visible = false; The GridView background code in}}}}

Repeater:

Foreground code:

Table Style
<style>
table {
border-collapse:collapse;
}
Table TR td,th {
border:1px solid black;
}
</style>
//*****************
<div>
<table>
<tr>
<th> level </th> <th> Level Two </th> <th> level three </th> <th> four </th> </tr>
<asp : Repeater id= "Rptincome" runat= "Server" >
<ItemTemplate>
<tr>
<td runat= "Server" Id= "Td0" ><% #Eval ("Aname")%></td> <td "
server" runat= "id=" TD1 #Eval ("><%") bname </td>
<td runat= "Server" id= "TD2" ><% #Eval ("CNAME")%></td> <td
"Server" Id= "Td3" ><% #Eval ("dname")%></td>
</tr>
</ItemTemplate>
</asp: repeater>
</table>
</div>
Repeater Foreground code

Background code:

public void DataBind () {String sql = ' Select A.aname,b.bname,c.cname, d.dname from AA to right join BB as B on a.aid=b
. Aid right Join CC as C on b.bid=c.bid left join DD as D on D.cid=c.cid order by A.aid ";
SqlDataAdapter SDA = new SqlDataAdapter (SQL, CN);
DataSet ds = new DataSet (); Sda.
Fill (DS);
Rptincome.datasource = ds;
Rptincome.databind ();
for (int i = 0; i < 4; i++)//Traverse each column {string rpttd = "TD"; string tdIdName1 = Rpttd + i.tostring (); Mergecell (TDIDNAME1); The ID text of the current listed TD is used as the parameter of the method}///<summary>//////</summary>///<param name= "tdIdName1" > The current row of TD in the current column ID text </param> private void Mergecell (string tdIdName1) {for (int i = rptincome.items.count-1; i > 0; i--)//RP 
Tincome.items.count-1 the total number of rows of data (data starting from 0) traverses each row of the current column {Mergecellset (tdIdName1, i); }///<summary>//////</summary>///<param name= "tdIdName1" > ID text </param>///&l for the current row of the current column T;param name= "I" > Current line </param> private void Mergecellset (String Tdidname1, int i) {HtmlTableCell Cellprev = rptincome.items[i-1]. FindControl (tdIdName1) as HtmlTableCell; Gets the cell in which the next row is in the front of the TD HtmlTableCell Cell = Rptincome.items[i]. FindControl (tdIdName1) as HtmlTableCell; Gets the cell cell in which the TD is currently in the forefront of the business. RowSpan = (cell. RowSpan = =-1)? 1:cell. RowSpan; Gets the number of rows spanned by the current row Cellprev.rowspan = (Cellprev.rowspan = = 1)? 1:cellprev.rowspan; Gets the number of rows in the current column cell across the next row if (cell. InnerText = = Cellprev.innertext) {//Let the current cell of the next line span the number of rows + the number of rows in the current row Cellprev.rowspan = = Cell.
RowSpan; Cell. Visible = false; Hide the current line//key code, and then judge the merge cell method for the 2nd column.} Repeater Background Code

The above is a small set to introduce the ASP.net in the GridView repeating table column of the implementation of the merge, hope to help everyone, if you have any questions please give me a message, small series will promptly reply to everyone. Here also thank you very much for the cloud Habitat Community website support!