gridview as Bank Extract[Answered] RSS

• • Reply
  mariolopes

  Member

  423 Points

  970 Posts

  gridview as Bank Extract

  Oct 30, 2018 10:13 AM|mariolopes|LINK

  Hi

  I Need to show one gridview as a Bank extract like the following (saldo strats as 0)

  id | opera | valor | saldo |

  1 | asas|10|10

  2|sdsd|5|15

  3|sdsadas|-6|9

  Hw can I get the column saldo as result from column valor?

  Thank you

  Mario Lopes
  https://programamos.pt
• • Reply
  jzero

  Participant

  961 Points

  620 Posts

  Re: gridview as Bank Extract

  Oct 30, 2018 11:10 PM|jzero|LINK

  Mario, for a Running Balance you have to make a Template column and work on values in RowDatabound, also you should create a variable to hold last balance value between RowDatabound calls.

  For a gridview like

  #	Description	Credit	Debit	Balance
  1	Add initial value	10	0	10
  2	Energy	0	5	5
  3	water	0	2	3

  
  On aspx file add a button and gridview like bellow

  <asp:Button ID="Button1" runat="server" Text="Button" />
    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
      <Columns>
        <asp:TemplateField HeaderText="#">
          <ItemTemplate><%# Container.DataItemIndex + 1 %></ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="Description" HeaderText="Description" ReadOnly="True" />
        <asp:BoundField DataField="Credit" HeaderText="Credit" ReadOnly="True" />
        <asp:BoundField DataField="Debit" HeaderText="Debit" ReadOnly="True"  />
        <asp:TemplateField HeaderText="Balance">
          <ItemTemplate>
            <asp:Label ID="lblBalance" runat="server" Text=""></asp:Label>
          </ItemTemplate>
        </asp:TemplateField>
      </Columns>
    </asp:GridView>

  On code behind

  ' Class to hold sample data
  Public Class clsData
      Public Property Description As String
      Public Property Credit As Decimal
      Public Property Debit As Decimal
      Public Sub New()
      End Sub
    End Class
  
    Protected Sub zLoadData()
      ' Create some sample data
      Dim sample1 As New clsData With {.Description = "Add initial value", .Credit = 10, .Debit = 0}
      Dim sample2 As New clsData With {.Description = "Energy", .Credit = 0, .Debit = 5}
      Dim sample3 As New clsData With {.Description = "Water", .Credit = 0, .Debit = 2}
      ' Create a list and samples to list
      Dim lstData As New List(Of clsData)
      lstData.Add(sample1)
      lstData.Add(sample2)
      lstData.Add(sample3)
      ' Set datasource & bind
      GridView1.DataSource = lstData
      GridView1.DataBind()
    End Sub
    Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
      zLoadData() ' Load some sample on gridview
    End Sub
  
    Private zBalance As Decimal = 0 ' Set to your starting Balance value
  
    Protected Sub GridView1_RowDataBound(sender As Object, e As GridViewRowEventArgs) Handles GridView1.RowDataBound
      If e.Row.RowType = DataControlRowType.DataRow Then
        Dim zCredit As Decimal = e.Row.Cells(2).Text
        Dim zDebit As Decimal = e.Row.Cells(3).Text
        Dim lblBalance As Label = e.Row.Cells(4).FindControl("lblBalance")
        zBalance = zBalance + zCredito - zDebito
        lblBalance.Text = zBalance
      End If
    End Sub

• • Reply
  Jenifer Jian...

  Contributor

  2130 Points

  705 Posts

  Re: gridview as Bank Extract

  Oct 31, 2018 04:19 AM|Jenifer Jiang|LINK

  Hi mariolopes,

  According to your description, I suggest that the key point of your requirement is to calculating the saldo in the event RowDataBound.

  You could set a variable to save the saldo you've calculated as the session I've set in the following code.

  .Aspx

              <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" OnRowDataBound="GridView1_RowDataBound">
                  <RowStyle HorizontalAlign="Center" />
                  <Columns>
                      <asp:BoundField DataField="id" HeaderText="id" ItemStyle-Width="150">
                          <ItemStyle Width="150px"></ItemStyle>
                      </asp:BoundField>
                      <asp:BoundField DataField="opera" HeaderText="opera" ItemStyle-Width="150">
                          <ItemStyle Width="150px"></ItemStyle>
                      </asp:BoundField>
                      <asp:TemplateField HeaderText="valor">
                          <ItemTemplate>
                              <asp:Label ID="lblvalor" runat="server" Text='<%# Eval("valor") %>'></asp:Label>
                          </ItemTemplate>
                          <ItemStyle Width="150px" />
                      </asp:TemplateField>
                      <asp:TemplateField HeaderText="saldo">
                          <ItemTemplate>
                              <asp:Label ID="lblsaldo" runat="server"></asp:Label>
                          </ItemTemplate>
                          <ItemStyle Width="150px" />
                      </asp:TemplateField>
                  </Columns>
              </asp:GridView>

  Code-behind.

          protected void Page_Load(object sender, EventArgs e)
          {
              if (!this.IsPostBack)
              {
                  DataTable dt = new DataTable();
                  dt.Columns.AddRange(new DataColumn[3] { new DataColumn("id"), new DataColumn("opera"), new DataColumn("valor")});
                  dt.Rows.Add("1", "asas", "10");
                  dt.Rows.Add("2", "sdsd", "5");
                  dt.Rows.Add("3", "sdsadas", "-6");
                  GridView1.DataSource = dt;
                  GridView1.DataBind();
              }
          }
          int saldovalue = 0;
          protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
          {
              if (e.Row.RowType == DataControlRowType.DataRow)
              {
                  Label valor = e.Row.FindControl("lblvalor") as Label;
                  Label saldo = e.Row.FindControl("lblsaldo") as Label;
                  int session = saldovalue;
                  saldovalue = session + Convert.ToInt32(valor.Text);
                  saldo.Text = saldovalue.ToString();
              }
          }

  result:

  

  Best Regards,

  Jenifer

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