使用c＃同时使用RowSpan和备用行颜色

Question

我正在尝试在1列上使用行跨度（如果下一行的值相同） 并根据上述情况交替行颜色。

我设法以我想要的方式运行行间距，但不能交替行。 BatchNo：3694217行应该是蓝色的。

这是当前的输出：

的Asp

<asp:GridView ID="visualisation" runat="server" 
                AutoGenerateColumns="false" OnDataBound="OnDataBound" OnItemDataBound="Item_Bound" CellPadding="15" CellSpacing="15" HeaderStyle-BackColor="DarkOliveGreen" GridLines="Both">
                <Columns>
                    <asp:BoundField DataField="BatchNo" HeaderText="BatchNo" HeaderStyle-Width="15%"  />
                    <asp:BoundField DataField="Type" HeaderText="Type" HeaderStyle-Width="15%"  />                                    
                    <asp:ImageField DataImageUrlField="DataLoaded" HeaderText="DataLoaded" HeaderStyle-Width="15%"  />
                    <asp:ImageField DataImageUrlField="Errors" HeaderText="Errors" HeaderStyle-Width="15%"  />
                    <asp:ImageField DataImageUrlField="ProcessingRun" HeaderText="ProcessingRun" HeaderStyle-Width="15%"  />
                </Columns>
            </asp:GridView>

C＃

protected void Page_Load(object sender, EventArgs e)
        {
            dataT();
            visualisation.DataBind();

        }

        public void dataT()
        {
            DataTable dtVisu = new DataTable();

            dtVisu.Columns.Add(new DataColumn("BatchNo", typeof(System.String)));
            dtVisu.Columns.Add(new DataColumn("Type", typeof(System.String)));
            dtVisu.Columns.Add(new DataColumn("DataLoaded", typeof(System.String)));
            dtVisu.Columns.Add(new DataColumn("Errors", typeof(System.String)));
            dtVisu.Columns.Add(new DataColumn("ProcessingRun", typeof(System.String)));
            //dtVisu.Columns.Add(new DataColumn("alignRow", typeof(System.String)));


            DataRow dr = dtVisu.NewRow();
            dr["BatchNo"] = "3704500";
            dr["Type"] = "Calibration";
            dr["DataLoaded"] = "images/g4-12.png";
            dr["Errors"] = "images/g4-12.png";
            dr["ProcessingRun"] = "images/g4-12.png";
            //dr["alignRow"] = "1";
            dtVisu.Rows.Add(dr);


            dr = dtVisu.NewRow();
            dr["BatchNo"] = "3704542";
            dr["Type"] = "Range Settings";
            dr["DataLoaded"] = "images/r4-12.png";
            dr["Errors"] = "images/r4-12.png";
            dr["ProcessingRun"] = "images/g4-12.png";
            dtVisu.Rows.Add(dr);

            dr = dtVisu.NewRow();
            dr["BatchNo"] = "3704542";
            dr["Type"] = "Range Settings";
            dr["DataLoaded"] = "images/r4-12.png";
            dr["Errors"] = "images/r4-12.png";
            dr["ProcessingRun"] = "images/g4-12.png";
            dtVisu.Rows.Add(dr);

            dr = dtVisu.NewRow();
            dr["BatchNo"] = "3687345";
            dr["Type"] = "Calibration";
            dr["DataLoaded"] = "images/g4-12.png";
            dr["Errors"] = "images/g4-12.png";
            dr["ProcessingRun"] = "images/g4-12.png";
            dtVisu.Rows.Add(dr);

            dr = dtVisu.NewRow();
            dr["BatchNo"] = "3694217";
            dr["Type"] = "Calibration";
            dr["DataLoaded"] = "images/g4-12.png";
            dr["Errors"] = "images/g4-12.png";
            dr["ProcessingRun"] = "images/g4-12.png";
            dtVisu.Rows.Add(dr);



            visualisation.DataSource = dtVisu;
        }

protected void OnDataBound(object sender, EventArgs e)
        {
            int RowSpan = 2;
            for (int i = visualisation.Rows.Count - 2; i >= 0; i--)
            {
                GridViewRow currRow = visualisation.Rows[i];
                GridViewRow prevRow = visualisation.Rows[i + 1];

                if (currRow.Cells[0].Text == prevRow.Cells[0].Text)
                {
                    currRow.Cells[0].RowSpan = RowSpan;
                    prevRow.Cells[0].Visible = false;
                    RowSpan += 1;

                    currRow.BackColor = Color.FromName("#7AA5D6");
                    prevRow.BackColor = Color.FromName("#7AA5D6");
                }
                else
                {
                    RowSpan = 2;
                }
            }
        }

Answer 1

您需要为行保留一个单独的计数器以指定交替的颜色。请注意，在当前代码中，颜色仅在跨越行时才会交替，因此单行不会被突出显示。围绕这个应该做的事情：

protected void OnDataBound(object sender, EventArgs e)
{
    int RowSpan = 2;
    // actual row counter, spanned rows count as one
    int rowCount = 0;
    for (int i = visualisation.Rows.Count - 2; i >= 0; i--)
    {
        GridViewRow currRow = visualisation.Rows[i];
        GridViewRow prevRow = visualisation.Rows[i + 1];

        if (currRow.Cells[0].Text == prevRow.Cells[0].Text)
        {
            currRow.Cells[0].RowSpan = RowSpan;
            prevRow.Cells[0].Visible = false;
            RowSpan += 1;
        }
        else
        {
            RowSpan = 2;
            //it was a new row
            rowCount++;
        }

        if (rowCount % 2 == 0)
        {
            currRow.BackColor = Color.FromName("#7AA5D6");            
        }
    }
}