如何从GridView列中删除/替换子字符串？

Question

下面是GridView：

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如果存在，我希望从date列中删除0:00:00。我更改了dataformatstring，但这也删除了9:09:15。

我对auto-generate fields文件和DataBind文件使用.cs和DataBind。

我尝试了Replace，但没有工作：

e.Row.Cells[0].Text = e.Row.Cells[0].Text.Replace("0:00:00"," ");

我怎么能这么做？

Gridview：

<asp:GridView ID="GridView4" runat="server" BackColor="White" 
    BorderColor="#999999" BorderStyle="None" BorderWidth="1px" CellPadding="3" 
    GridLines="Vertical" Width="98%" 
    Height="100%" onrowdatabound="GridView4_RowDataBound" RowStyle-HorizontalAlign="Center" >
    <AlternatingRowStyle BackColor="#DCDCDC" />
    <FooterStyle BackColor="#CCCCCC" ForeColor="Black" />
    <HeaderStyle BackColor="#000084" Font-Bold="True" ForeColor="White" />
    <PagerStyle BackColor="#999999" ForeColor="Black" HorizontalAlign="Center" />
    <RowStyle BackColor="#EEEEEE" ForeColor="Black" />
    <SelectedRowStyle BackColor="#008A8C" Font-Bold="True" ForeColor="White" />
    <SortedAscendingCellStyle BackColor="#F1F1F1" />
    <SortedAscendingHeaderStyle BackColor="#0000A9" />
    <SortedDescendingCellStyle BackColor="#CAC9C9" />
    <SortedDescendingHeaderStyle BackColor="#000065" />
</asp:GridView>

代码：

protected void Page_Load(object sender, EventArgs e)
    {
        try
        {
            OleDbConnection Connection6;
            using (Connection6 = new OleDbConnection("Provider=MSDAORA.1;Data Source=XXXXXX:1521/orcl;Persist Security Info=True;Password=XXXXXXX;User ID=XXXXXX;"))
            {
            string sqlQuery = "select * from db.user";

            using (OleDbDataAdapter cmd = new OleDbDataAdapter(sqlQuery, Connection6))
            {
                Connection6.Open();
                DataTable dt = new DataTable();
                cmd.Fill(dt);
                GridView4.DataSource = dt;
                GridView4.DataBind();

                Connection6.Close();
            }
        }
    }
        catch (Exception)
        {
        }
    }

Answer 1

您可以使用RowDataBound事件，然后使用findcontrol标记控件。

<asp:GridView ID="GridView1" AutoGenerateColumns="false" runat="server"
        onrowdatabound="GridView1_RowDataBound">
  <Columns>    
    <asp:TemplateField HeaderText="Date">
      <ItemTemplate>
         <asp:Label ID="lblDate" Text='<%# Eval("Date") %>' runat="server"></asp:Label>
 .....
 </Columns>
</asp:GridView>

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
  if (e.Row.RowType == DataControlRowType.DataRow)
   {      
    var lbl =  e.Row.FindControl("lblDate") as Label;
    lbl.Text = lbl.Text.Replace("0:00:00", "");     
   }
}

如果没有模板字段并使用绑定字段，则使用

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
  if (e.Row.RowType == DataControlRowType.DataRow)
  {
    if(e.Row.Cells[0].Text.Contains("0:00:00"))
       e.Row.Cells[0].Text = e.Row.Cells[0].Text.Replace("0:00:00", "");
  }
}