C# 如何计算asp gridview中每行1的%并显示在模板字段标签内？

我有一个包含8列的gridview：

用户|%| a | b | c | d | e | f

JJJJ |%| 1 | 0 | 0 | 1 | 1 | 1

AAA |%| 1 | 1 | 1 | 1 | 1 | 0

<asp:GridView ID="GridView1" DataSourceID="SqlDataSource1" AutoGenerateColumns="false" 
runat="server"  OnRowDataBound="GridView1_RowDataBound">
        <Columns>
            <asp:TemplateField>
            <HeaderTemplate>
            <asp:Label ID="text" runat="server" Text="%"></asp:Label>
            </HeaderTemplate>
            <ItemTemplate>
            <asp:Label runat="server" ID="myLabel" Text="%" />
            </ItemTemplate>
            </asp:TemplateField>
            <asp:BoundField DataField="a" HeaderText="a" >
            </asp:BoundField>
            <asp:BoundField DataField="b" HeaderText="b"> 
            </asp:BoundField>
            <asp:BoundField DataField="c" HeaderText="c"  >
            </asp:BoundField>
            <asp:BoundField DataField="d" HeaderText="d"   >
            </asp:BoundField>
            <asp:BoundField DataField="e" HeaderText="e" >
            </asp:BoundField>
            <asp:BoundField DataField="f" HeaderText="f" >
            </asp:BoundField>
        </Columns>
    </asp:GridView>

---

关于如何处理这个问题有什么想法吗

当然，列数是固定的，所以必须进行交叉乘法： 6列=100% 4列=x% 为了做到这一点，您可以使用迭代器添加并知道寄存器中1的数量。 诸如此类：

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        int countTrues = 0;
        //i = 1 because your first column is dispensable to this.
        for (int i = 1; i < e.Row.Cells.Count; i++)
        {
            if (Convert.ToBoolean(e.Row.Cells[i].Text))
            {
                //If you get 1 from the database, it will convert to true, so it will increment the counter.
                countTrues++;
            }
        }

        //The amount of "trues" multiplied by 100 divided by 6 which is the number of columns you have.
        ((Label)e.Row.FindControl("mylabel")).Text = ((countTrues * 100) / 6).ToString();
   }
}

然后你会发现：

---

希望这有帮助。

您可以循环RowDataBound事件中的所有单元格，检查数据源中的1值并计算百分比

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    //check if the row is a datarow
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        //cast the row back to a datarowview
        DataRowView row = e.Row.DataItem as DataRowView;

        decimal NoOfOnes = 0;
        decimal NoOfColumns = e.Row.Cells.Count - 1;

        //loop all the columns and find the 1's
        for (int i = 0; i < NoOfColumns; i++)
        {
            if (row[i].ToString() == "1")
            {
                NoOfOnes++;
            }
        }

        //find the label in the current row
        Label lbl = e.Row.FindControl("myLabel") as Label;

        //display results
        lbl.Text = string.Format("{0:N2}", (NoOfOnes / NoOfColumns) * 100);
    }
}

---

我得到以下错误。如果Convert.ToBooleane.Row.Cells[i].Text，则此行上的字符串未被识别为有效的布尔值。这是因为在gridview中，我有一个case语句使真值显示为1吗？

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    //check if the row is a datarow
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        //cast the row back to a datarowview
        DataRowView row = e.Row.DataItem as DataRowView;

        decimal NoOfOnes = 0;
        decimal NoOfColumns = e.Row.Cells.Count - 1;

        //loop all the columns and find the 1's
        for (int i = 0; i < NoOfColumns; i++)
        {
            if (row[i].ToString() == "1")
            {
                NoOfOnes++;
            }
        }

        //find the label in the current row
        Label lbl = e.Row.FindControl("myLabel") as Label;

        //display results
        lbl.Text = string.Format("{0:N2}", (NoOfOnes / NoOfColumns) * 100);
    }
}