如何在运行时更改gridview行颜色？

我使用网格视图和里面即时通讯使用下拉列表如何在运行时更改gridview行颜色？

我的GridView

<asp:GridView ID="grdUser" runat="server" AllowPaging="True" AllowSorting="True" CaptionAlign="Left" OnPageIndexChanging="grdUser_PageIndexChanging" OnSorting="grdUser_Sorting" PageSize="5" CssClass="table table-hover table-striped table-responsive" DataKeyNames="Email"> 
     <AlternatingRowStyle BackColor="#CCCCFF" /> 
     <HeaderStyle BackColor="#009933" Font-Bold="True" Font-Size="Medium" HorizontalAlign="Center" VerticalAlign="Middle" /> 
     <PagerSettings FirstPageText="First" Mode="NumericFirstLast" LastPageText="Last" PageButtonCount="4" NextPageText="" /> 
     <PagerStyle BackColor="#CC66FF" HorizontalAlign="Right" VerticalAlign="Middle" ForeColor="Black" /> 
     <Columns> 
      <asp:TemplateField> 
       <ItemTemplate> 
        <asp:DropDownList ID="ddlAct" runat="server" OnSelectedIndexChanged="ddlAct_SelectedIndexChanged" AutoPostBack="true"> 
         <asp:ListItem Value="Action" Text="imtiaz" >Action</asp:ListItem> 
         <asp:ListItem Value="Activate" Text="imtiaz">Activate</asp:ListItem> 
         <asp:ListItem Value="Block" Text="imtiaz">Block</asp:ListItem> 
         <asp:ListItem Value="Delete" Text="imtiaz">Delete</asp:ListItem> 
        </asp:DropDownList> 
       </ItemTemplate> 
      </asp:TemplateField> 
     </Columns> 
    </asp:GridView>

现在还当我点击激活选定行的颜色应该改变

的情况我代码是

protected void ddlAct_SelectedIndexChanged(object sender, EventArgs e) 
{ 

    using (SqlConnection con = new SqlConnection(CS)) 
    { 
     DropDownList ddlAct = (DropDownList)sender; 
     GridViewRow row = (GridViewRow)ddlAct.Parent.Parent; 
     int idx = row.RowIndex; 
     string Email = grdUser.DataKeys[idx]["Email"].ToString(); 

     //string Email = ((Label)row.Cells[0].FindControl("Email")).Text; 
     DropDownList ddl = (DropDownList)row.Cells[0].FindControl("ddlAct"); 
     var ddlvalue = ""; 

     if (ddl.Text.ToString() == "Activate") 
     { 
      ddlvalue = "Approved"; 

     } 
     else if (ddl.Text.ToString() == "Block") 
     { 
      ddlvalue = "Blocked"; 
     } 
     else 
     { 
      ddlvalue = ddl.Text.ToString(); 
     } 
     string query = "Update Users set Status ='" + ddlvalue + "' where E_Mail='" + Email + "'"; 



     SqlCommand cmd = new SqlCommand(query, con); 
     con.Open(); 
     cmd.ExecuteNonQuery(); 
     GetDataTable(); 

     lblMsg.Visible = true; 
     lblMsg.ForeColor = Color.Red; 
     lblMsg.Text = "Status is : Account is " + ddl.Text.ToString(); 
    } 
}

我必须改变只在选定的索引内更改颜色。请帮助

来源

2016-07-26 faisal

小改进：使用'ddlAct.NamingContainer'而不是'ddlAct.Parent.Parent'和'row.FindControl（“ddlAct”）'而不是'row.Cells [0] .FindControl（“ddlAct”）'。 –

根据这个问题，目前尚不清楚。为什么你不能使用：'row.BackColor = whatevercolor' –

你尝试过'grdUser.SelectedRow.BackColor = System.Drawing.Color.Aqua'吗？ –

我已经这样做了多个项目

Public Sub MyGridView_RowDataBound(sender As Object, e As GridViewRowEventArgs) Handles GridView1.RowDataBound 
    If e.Row.RowType = DataControlRowType.DataRow Then 
     Dim checkCell As String = DirectCast(e.Row.FindControl("Label11"), Label).Text 
     If checkCell = 0 Then 
      e.Row.Cells(11).BackColor = Drawing.Color.Green 
      e.Row.Cells(11).ForeColor = Drawing.Color.White 
     ElseIf checkCell > 0 And checkCell < 11 Then 
      e.Row.Cells(11).BackColor = Drawing.Color.Yellow 
     ElseIf checkCell > 10 Then 
      e.Row.Cells(11).BackColor = Drawing.Color.Red 
      e.Row.Cells(11).ForeColor = Drawing.Color.White 
     End If 
    End If 
End Sub

中的FindControl（“Label11”）是指在aspx页面我的数据绑定对象。而e.row.cells（11）是我想突出显示的列号。这些值可以更改为选择任何列或查找控件。这甚至在数据绑定上被调用，所以数据绑定可能是你需要获得你的行颜色更新。

来源

2016-07-27 12:52:55 ag93

如何在运行时更改gridview行颜色？

回答

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