Skip to main content

Merge GridView Cells Or Columns in Row ASP.NET C# VB.NET




In this example i am going to describe how to merge GridView cells or Columns in gridview rows containing same data or content using C# and VB.NET in ASP.NET

For this i m using DataBound Event of gridview, counting total rows and then checking each cells value against value of same cell in previous row and then setting the RowSpan of cells.


For this i have created a table containing Counties ,states and respective cities and country and state cells / columns are merged in rows having same country or states.


For knowing how to merge Gridview headers read article below
Merging GridView Header Columns or multiple Headers


You would also like to read
Hide GridView Columns In Normal Mode and Visible In Edit

Running Total In Gridview Footer in ASP.NET C# VB.NET











Html source of the page look like this 
<asp:GridView ID="GridView1" runat="server" 
    AutoGenerateColumns="False"  
    BorderStyle="None" BorderWidth="1px" CellPadding="4" 
    GridLines="Horizontal" ForeColor="Black" 
    Height="119px" DataSourceID="SqlDataSource1" 
    OnDataBound="GridView1_DataBound1"> 
            <Columns>
            <asp:BoundField DataField="Country" 
                            HeaderText="Country" 
                            SortExpression="Country" />
            <asp:BoundField DataField="State" 
                            HeaderText="State" 
                            SortExpression="State" />
            <asp:BoundField DataField="City" 
                            HeaderText="City" 
                            SortExpression="City" />
        </Columns>
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" 
ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
SelectCommand="SELECT [Country], [State], [City] 
               FROM [Details] ORDER BY [State]">
</asp:SqlDataSource>

C# code behind
01protected void GridView1_DataBound1(object sender, EventArgs e)
02{
03  for (int rowIndex = GridView1.Rows.Count - 2;
04                                     rowIndex >= 0; rowIndex--)
05  {
06    GridViewRow gvRow = GridView1.Rows[rowIndex];
07    GridViewRow gvPreviousRow = GridView1.Rows[rowIndex + 1];
08    for (int cellCount = 0; cellCount < gvRow.Cells.Count;
09                                                  cellCount++)
10    {
11     if (gvRow.Cells[cellCount].Text ==
12                            gvPreviousRow.Cells[cellCount].Text)
13     {
14       if (gvPreviousRow.Cells[cellCount].RowSpan < 2)
15       {
16         gvRow.Cells[cellCount].RowSpan = 2;
17       }
18       else
19       {
20        gvRow.Cells[cellCount].RowSpan =
21            gvPreviousRow.Cells[cellCount].RowSpan + 1;
22       }
23       gvPreviousRow.Cells[cellCount].Visible = false;
24    }
25   }
26 }
27}
VB.NET code behind
01Protected Sub GridView1_DataBound1
02           (ByVal sender As Object, ByVal e As EventArgs)
03 
04For rowIndex As Integer = GridView1.Rows.Count - 2 To 0 Step -1
05    Dim gvRow As GridViewRow = GridView1.Rows(rowIndex)
06    Dim gvPreviousRow As GridViewRow = GridView1.Rows(rowIndex + 1)
07    For cellCount As Integer = 0 To gvRow.Cells.Count - 1
08    If gvRow.Cells(cellCount).Text =
09                         gvPreviousRow.Cells(cellCount).Text Then
10    If gvPreviousRow.Cells(cellCount).RowSpan < 2 Then
11    gvRow.Cells(cellCount).RowSpan = 2
12    Else
13    gvRow.Cells(cellCount).RowSpan =
14                       gvPreviousRow.Cells(cellCount).RowSpan + 1
15    End If
16    gvPreviousRow.Cells(cellCount).Visible = False
17    End If
18    Next
19  Next
20End Sub
Download sample code attached

Comments

Post a Comment

Popular posts from this blog

Hierarchical GridView in ASP.NET with AJAX, JQuery implementation - Part 1

Previously I had blogged some post related to showing two grids in hierarchical way. For example - when I need to show an invoice reports on the screen, the user requesting to show the list of invoices at initial time and they can drill down the details of item details of each invoice by clicking on respective row. The implementations can be in multiple ways, but I had blogged the implementation with AJAX and without AJAX using Java script on ASP.NET page. Below are the URLs of the same – Hierarchical GridView in ASP.NET Hierarchical GridView in ASP.NET with AJAX, Javascript implementation In this post I am taking the same requirements done before and enhance with some additional functionality as per readers expectations. The requirement on this implementation will be – The page should show a Grid View with list of Orders with Expand icon on the first column. On click of expand icon on each row, the Order Details of the Order must be fetched from the database ...
Post a Comment
Read more

Editing Child GridView in Nested GridView

Editing Child GridView in Nested GridView In this article we will explore how to edit child gridview in the nested gridview.   Let''s write some code. Step 1:  Add scriptmanager in the aspx page. < asp : ScriptManager   ID ="ScriptManager1"   runat ="server"   EnablePageMethods ="true"> </ asp : ScriptManager > Step 2:  Add below stylesheet for modal popup. < style   type ="text/css">        .modalBackground        {              background-color : Gray;              filter : alpha(opacity=80);              opacity : 0.5;       }        .ModalWindow        {     ...
Post a Comment
Read more

Scrollable Gridview With fixheader using JQuery in Asp.net

Scrollable Gridview With fixheader using JQuery in Asp.net Introduction: In this article I will explain how to implement scrollable gridview with fixed header in asp.net using JQuery.  Description:  In Previous posts I explained lot of articles regarding Gridview. Now I will explain how to implement scrollable gridview with fixed header in asp.net. I have one gridview that contains lot of records and I used  paging for gridview  but the requirement is to display all the records without paging. I removed paging at that time gridview occupied lot of space because it contains more records to solve this problem we implemented scrollbar.  After scrollbar implementation if we scroll the gridview we are unable to see Gridview header.   To implement Scrollable gridview with fixed header I tried to implement concept with css and JavaScript but there is no luck because maintaining fixed header working in IE but not in Mozilla and vice versa to ...
Post a Comment
Read more