gridview模板列是放了个input(text),在后台如何取值？

前台代码：
<asp:TemplateField HeaderText="检查日期">
<ItemTemplate>
    <input  id="time" type="text" runat="server"  name="time"  onfocus="WdatePicker()" style="width: 80px; text-align:center;"  />
</ItemTemplate>
</asp:TemplateField>
我想在后台读到模板列html控件的值，用findcontrol(ID)没用！
急，谢谢各位大侠！

解决方案 »

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参考下面的例子：System.Web.UI.WebControls.ImageButton cbox = (System.Web.UI.WebControls.ImageButton)GridView1.Rows[i].FindControl("btnUpload");
<input id="time" type="text" runat="server" name="time_<%# Container.DataItemIndex %>" onfocus="WdatePicker()" style="width: 80px; text-align:center;" />Request.Form["time_"+ xxx];
    protected void gv_checkinfor_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName == "btn_save_Click")
        {
            int i = Convert.ToInt32(e.CommandArgument.ToString());//gv行号
             string dev_num = gv_checkinfor.Rows[i].Cells[1].Text;
           string t = Request.Form["time_" + i.ToString()];
                   }
    }
t是空值
  protected void gv_checkinfor_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName == "btn_save_Click")
        {
            int i = Convert.ToInt32(e.CommandArgument.ToString());//gv行号
            string dev_num = gv_checkinfor.Rows[i].Cells[1].Text;
            System.Web.UI.HtmlControls.HtmlInputText txt = (System.Web.UI.HtmlControls.HtmlInputText)gv_checkinfor.Rows[i].FindControl("time");
            Response.Write(txt.Value);
        }
    }txt也是null
把这个控件换成<asp textbox>吧
绑定到text 有值吗，你精确到那一行，试试，
System.Web.UI.HtmlControls.HtmlInputText txt = (System.Web.UI.HtmlControls.HtmlInputText)GridView1.Rows[0].FindControl("name");            Response.Write(txt.Value.ToString());
btn_save_Click是什么啊？为什么它触发的时候你在后台就去读ItemTemplate而不是edittemplate之类的模板呢？
完全是你的使用方法有问题。你可以把下面的代码拷贝粘贴为xx.aspx进行直接测试。
下面提供了3种获取的方法
<%@ Page Language="C#" EnableViewState="true" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">  protected void Page_Load(object sender, EventArgs e)
  {
    if (!Page.IsPostBack)
    {
      System.Data.DataTable dt = new System.Data.DataTable();
      System.Data.DataRow dr;
      dt.Columns.Add(new System.Data.DataColumn("id", typeof(System.String)));
      dt.Columns.Add(new System.Data.DataColumn("Name", typeof(System.String)));      for (int i = 0; i < 8; i++)
      {
        System.Random rd = new System.Random(Environment.TickCount * i); ;
        dr = dt.NewRow();
        dr[0] = i;
        dr[1] = "xxx" + i.ToString();
        dt.Rows.Add(dr);
      }      GridView1.DataSource = dt;
      GridView1.DataBind();
    }
  }  protected void Button1_Click(object sender, EventArgs e)
  {
    foreach (GridViewRow v in GridView1.Rows)
    {
      HtmlInputText t = v.FindControl("time") as HtmlInputText;
      Response.Write("<li>" + t.Value);
    }
  }  protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
  {
    if (e.CommandName == "GetDate")
    {      GridViewRow row = GridView1.Rows[Convert.ToInt32(e.CommandArgument)];
      HtmlInputText t = row.FindControl("time") as HtmlInputText;
      Response.Write("<li>" + t.Value);
    }
  }  protected void Button3_Click(object sender, EventArgs e)
  {
    GridViewRow row = (sender as Button).Parent.Parent as GridViewRow;
    HtmlInputText t = row.FindControl("time") as HtmlInputText;
    Response.Write("<li>" + t.Value);
  }
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
  <title></title>
</head>
<body>
  <form id="form1" runat="server">
  <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" OnRowCommand="GridView1_RowCommand">
    <Columns>
      <asp:TemplateField HeaderText="检查日期">
        <ItemTemplate>
          <input id="time" type="text" runat="server" name="time" style="width: 80px; text-align: center;" />
        </ItemTemplate>
      </asp:TemplateField>
      <asp:TemplateField HeaderText="检查日期">
        <ItemTemplate>
          <asp:Button ID="Button2" runat="server" Text="得到方法2" CommandName="GetDate" CommandArgument='<%#Container.DataItemIndex %>' />
        </ItemTemplate>
      </asp:TemplateField>
      <asp:TemplateField HeaderText="检查日期">
        <ItemTemplate>
          <asp:Button ID="Button3" runat="server" Text="得到方法3" Height="21px" OnClick="Button3_Click"
            Width="89px" />
        </ItemTemplate>
      </asp:TemplateField>
    </Columns>
  </asp:GridView>
  <asp:Button ID="Button1" runat="server" Text="得到方法1" OnClick="Button1_Click" />
  </form>
</body>
</html>
我用的跟第二种方法是一样的啊
而且我用模板列试了，结果还是空值，没有读出input里的日期
    protected void gv_checkinfor_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName == "btn_save_Click")
        {
           int i = Convert.ToInt32(e.CommandArgument.ToString());//gv行号
            GridViewRow row = gv_checkinfor.Rows[Convert.ToInt32(e.CommandArgument)];
           HtmlInputText t = row.FindControl("time"+i.ToString()) as HtmlInputText;
           Response.Write(t.Value.ToString());
        }
    }