Merge Same Data Column in Gridview

In this article is code to merge columns & cells. I try to describe how to merge cells in Gridview in ASP.NET.

In this article I use an OnRowDataBound event of GridView and use RowSpan of cells.

In this article I connect with a SQL database & in the table is a college description. College name with branch wise .. both colleges have many branches so I merge college name like this:



on Aspx page

In the aspx page add a GridView Control then add a SqldataSource. Configure the database with a college table and a fill for the GridView. All data is shown in the GridView. Add an event to the GridView:

 OnRowDataBound="GridView1_RowDataBound"



In the aspx.cs page write the following code:

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {   //We're only interested in Rows that contain data
            //get a reference to the data used to databound the row
            DataRowView drv = ((DataRowView)e.Row.DataItem);
            if (previousCat == drv["Collegename"].ToString())
            {
                //If it's the same category as the previous one
                //Increment the rowspan
                if (GridView1.Rows[firstRow].Cells[0].RowSpan == 0)

                    GridView1.Rows[firstRow].Cells[0].RowSpan = 2;
                else
                    GridView1.Rows[firstRow].Cells[0].RowSpan += 1;
                //Remove the cell
                e.Row.Cells.RemoveAt(0);
            }
            else //It's a new category
            {                //Set the vertical alignment to top
                e.Row.VerticalAlign = VerticalAlign.Top;
                //Maintain the category in memory
                previousCat = drv["Collegename "].ToString();
                firstRow = e.Row.RowIndex;
            }
        }
    }

Then you run your page & see the merged data in the GridView.

Conclusion

In this article I tried to solve the problem of merging columns in a GridView. Hopefully it's working for you too.