ASP.NET在模板字段中的Gridview单元格中更改文本和颜色

Question

我在ASP.net中有Gridview显示数据.根据数据,它会根据单元格的值更改颜色和文本.当列不是模板字段时,这可以正常工作.

 //WORKS WHEN IS NOT A TEMPLATE FIELD
 if (e.Row.RowType == DataControlRowType.DataRow)
 {
        if (e.Row.Cells[2].Text == "1")
        {

           e.Row.Cells[2].Text = "IN";
           e.Row.Cells[2].BackColor = Color.Blue;
           e.Row.Cells[2].ForeColor = Color.White;
        }

  }

现在我将Column转换为Template字段,但没有任何效果.

     //DOEST NOT WORK WHEN IS a TEMPLATE FIELD
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
         if (e.Row.Cells[2].Text == "1")
         {

             e.Row.Cells[2].Text = "IN";
             e.Row.Cells[2].BackColor = Color.Blue;
             e.Row.Cells[2].ForeColor = Color.White;
         }

     }

我得到了颜色工作,但现在我需要将文本更改为以下内容.IF statusID == 1然后显示IN,否则如果statusID == 2则显示OUT

<asp:TemplateField HeaderText="StatusID" SortExpression="StatusID">
                            <EditItemTemplate>
                                <asp:DropDownList ID="DropDownList1" runat="server" SelectedValue = '<%# Bind("StatusID") %>'>
                                    <asp:ListItem Value="1">IN</asp:ListItem>
                                    <asp:ListItem Value="2">OUT</asp:ListItem>
                                </asp:DropDownList>
                            </EditItemTemplate>
                            <ItemTemplate>
                                <asp:Label ID="lblStatus" runat="server" Text='<%# Bind("StatusID") %>' ForeColor='<%# Convert.ToString(Eval("StatusID")) == "1" ? System.Drawing.Color.Green: Convert.ToString(Eval("StatusID")) == "2" ? System.Drawing.Color.Red: System.Drawing.Color.Purple%>'></asp:Label>
                            </ItemTemplate>
                        </asp:TemplateField>

你们任何人都知道如何解决这个问题.提前致谢.

Answer 1

模板列中的原因不起作用,状态值为null.请尝试以下方法.

// In template column,
if (e.Row.RowType == DataControlRowType.DataRow)
{
   var status = (Label)e.Row.FindControl("lblStatus");
   if (status.Text == "1")
   {
      e.Row.Cells[2].Text = "IN";
      e.Row.Cells[2].BackColor = Color.Blue;
      e.Row.Cells[2].ForeColor = Color.White;
   }
}

或者将DataItem转换为适当的对象并获取状态值.

GridViewRow.DataItem属性

// In template column,
if (e.Row.RowType == DataControlRowType.DataRow)
{
   var obj = (MyObject)e.Row.DataItem;
   if (obj.Status == 1)
   {
      e.Row.Cells[2].Text = "IN";
      e.Row.Cells[2].BackColor = Color.Blue;
      e.Row.Cells[2].ForeColor = Color.White;
   }
}