Calculating the total value of each column in GridView and Displaying them in Footer

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I have 7 columns in my Gridview starting from Sunday to Saturday. I need to add the values within each column and display them on footer.
I tried doing for single column but not able to do for each column.

C#

int total=0;
 protected void gvEmployeeTimeSheet_RowDataBound(object sender, GridViewRowEventArgs e)
        {          
            
            if (e.Row.RowType == DataControlRowType.DataRow)
            {  
                Label lblsaturday = (Label)e.Row.FindControl("lblSaturday");
                int qty = Int32.Parse(lblsaturday.Text);
                 total = total + qty;
            }

            if (e.Row.RowType == DataControlRowType.Footer)
            {
                Label lblTotalqty = (Label)e.Row.FindControl("lblFootersaturday");
                lblTotalqty.Text = total.ToString();
            }
        }

Posted 17-Sep-14 12:38pm

Member 11070376

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Sergey Alexandrovich Kryukov 17-Sep-14 18:45pm

Are you binding it with some database? If so, it would be better to perform such calculations (really simple ones) on the data source, not on UI...
—SA

Member 11070376 17-Sep-14 20:14pm

yes i am binding to database... can u plz help me with this.

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ChauhanAjay · Accepted Answer · 2014-09-17T15:30:00

In your gridview named "gvEmployeeTimeSheet" set the ShowFooter="True". Please go through the code below which is going to calculate the total of one column and you may then extend it to other columns. The below code is just a sample you will need to change it according to your needs.

C#

decimal TotalSales = (decimal)0.0;
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
      if (e.Row.RowType == DataControlRowType.DataRow)
        TotalSales += Convert.ToDecimal(DataBinder.Eval(e.Row.DataItem, "ProductSales"));
      else if (e.Row.RowType == DataControlRowType.Footer)
        e.Row.Cells[1].Text = String.Format("{0:c}", TotalSales);
    }

Hope the above code sample helps.

George Jonsson · Accepted Answer · 2014-09-17T16:42:00

Assuming your DataGridView has a DataTable as a data source you can do like this.

Just an example table. You already have a data table

C#

DataTable dt = new DataTable();
dt.Columns.Add("Sunday", typeof(int));   // I have used int as data type.
dt.Columns.Add("Monday", typeof(int));
dt.Columns.Add("Tuesday", typeof(int));
dt.Columns.Add("Wednesday", typeof(int));
dt.Columns.Add("Thursday", typeof(int));
dt.Columns.Add("Friday", typeof(int));
dt.Columns.Add("Saturday", typeof(int));

// Add some sample data
for (int i = 0; i < 5; i++)
{
    dt.Rows.Add(1, 2, 3, 4, 5, 6, 7);
}
dt.AcceptChanges();

Here your code starts

C#

// Convert the DataTable to an IQueryable (LINQ)
var query = dt.AsEnumerable().AsQueryable();

// Calculate the sum for the different columns
// If you have another data type in your column, you need to use a different cast
int sumSunday = query.Sum(row => (int)row["Sunday"]);
int sumMonday = query.Sum(row => (int)row["Monday"]);
// And so on

Calculating the total value of each column in GridView and Displaying them in Footer

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