GridView中取EditItemTemplate里面控件的问题

Question

我用GridView绑定了数据。我想要做编辑更新功能。
<asp:TemplateField HeaderText="对与错">
                    <EditItemTemplate>
                        <asp:RadioButton ID="rbtnYes" runat="server" Text="√" GroupName="button" />
                        <asp:RadioButton ID="rbtnNo" runat="server" Text="×" GroupName="button" />
                    </EditItemTemplate>
                    <ItemTemplate>
                    <%# Eval("Hj_YesOrNo")%>
                    </ItemTemplate>
                </asp:TemplateField>RadioButton一进来的时候是根据数据库的值先绑定的。也就是说。数据库要是√。那rbtnYes应该默认选中。。我怎么获取EditItemTemplate里面的控件。然后进行绑定呀？我用for能只能拿出ItemTemplate里面的控件。因为RadioButton 放在EditItemTemplate中。所以不知道怎么拿if (e.Row.RowState == DataControlRowState.Edit)
        {
            Label lblID = e.Row.FindControl("lblID") as Label;
            RadioButton rbtnYes = e.Row.FindControl("rbtnYes") as RadioButton;
            RadioButton rbtnNo = e.Row.FindControl("rbtnNo") as RadioButton;
            HappyReadJudge Judge = HappyReadJudgeBLL.GetJudgeByID(Convert.ToInt32(lblID.Text));
            if (Judge.Hj_YesOrNo == "√")
            {
                rbtnYes.Checked = true;
            }
            else
            {
                rbtnNo.Checked = true;
            }
        }
我用了RowDataBound事件拿出数据。。可以。。但是在交替行的时候。就无法绑定了。也就是说。点第一行的时候。会进来绑定数据。但是点第二行的时候。因为是交替行。所以就不会进来。既然写了交替行。里面找出的控件也是为null 的有什么办法能把EditItemTemplate里面的控件拿出来啊？在RowUpdating里面就可以拿。但是在RowUpdating事件外怎么拿呢？会的来帮一下！！

Answer 1

你是想设置初期值吗？在rowcreate中应该可以设置的。

Answer 2

 <EditItemTemplate>
  <asp:RadioButton ID="rbtnYes" runat="server" Text="√" GroupName="button" />
  <asp:RadioButton ID="rbtnNo" runat="server" Text="×" GroupName="button" />
  </EditItemTemplate>
<ItemTemplate>
  <asp:RadioButton ID="rbtnYes2" runat="server" Text="√" GroupName="button" />
  <asp:RadioButton ID="rbtnNo2" runat="server" Text="×" GroupName="button" />
  <%# Eval("Hj_YesOrNo")%>
  </ItemTemplate> if (e.Row.RowState == DataControlRowState.Edit || ((int)(e.Row.RowState & DataControlRowState.Edit)) != 0)
                {
                    RadioButton  rdbl= e.Row.FindControl("rbtnYes") as RadioButton ;
                  //查询
                }

Answer 3

if (e.Row.RowState == DataControlRowState.Edit)
e.Row.RowState   ==   (DataControlRowState.Alternate|DataControlRowState.Edit) 
详细请看
http://blog.xunbin.com/Article/2010/9/2/187/

Answer 4

完整的例子、<%@ Page Language="C#" AutoEventWireup="true" Debug="true" %>
<%@ Import Namespace="System.Data" %>
<script runat="server">
string GetUserPhoto(object pathPhoto)
{
  if (pathPhoto == DBNull.Value)
  {
    return "<img src='../Images/none.gif'>";
  }
  else
  {
    return "<img src='../Upload/" + pathPhoto.ToString() + "'>";
  }
}protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
  if (e.Row.RowType == DataControlRowType.DataRow)
  {
    if (e.Row.RowIndex == GridView1.EditIndex)
    {      DataRowView rowItem = (DataRowView)e.Row.DataItem;      DropDownList clsName = (DropDownList)e.Row.FindControl("uClassName");
      if (rowItem["ClassName"] != DBNull.Value)
      {
        clsName.Items.FindByText(rowItem["ClassName"].ToString()).Selected = true;
      }      if (rowItem["Gender"] != DBNull.Value)
      {        RadioButtonList oGender = (RadioButtonList)e.Row.FindControl("uGender");
        oGender.SelectedIndex = (Convert.ToBoolean(rowItem["Gender"]) ? 0 : 1);
      }
    }
  }
}protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
  if (e.CommandName == "New")
  {
    string StudentTitle = ((TextBox)GridView1.FooterRow.FindControl("NewTitle")).Text;
    if (StudentTitle.Trim() == "")
    {
      ErrorMsg.Text = "请输入姓名";
      return;
    }
    string StudentBirthDay = ((TextBox)GridView1.FooterRow.FindControl("NewBirthDay")).Text;
    bool StudentGender = ((RadioButtonList)
      GridView1.FooterRow.FindControl("NewGender")).SelectedValue == "男" ? true : false;
    string StudentClassName = ((DropDownList)
      GridView1.FooterRow.FindControl("NewClassName")).SelectedValue;
    FileUpload oUpload = (FileUpload)GridView1.FooterRow.FindControl("AddPhoto");
    String FileName = "";
    FileName = Guid.NewGuid().ToString("D") + System.IO.Path.GetExtension(oUpload.FileName);
    oUpload.SaveAs(Server.MapPath("~") + "/Upload/" + FileName);
    string sql = "Insert Into Student (Title,BirthDay,Gender,PhotoPath,ClassName)";
    sql += " Values(@Title,@BirthDay,@Gender,@PhotoPath,@ClassName)";
    SqlDataSource1.InsertCommand = sql;
    SqlDataSource1.InsertParameters.Add("@Title", TypeCode.String, StudentTitle);
    SqlDataSource1.InsertParameters.Add("@BirthDay", TypeCode.DateTime, StudentBirthDay);
    SqlDataSource1.InsertParameters.Add("@Gender", TypeCode.Boolean, StudentGender.ToString());
    SqlDataSource1.InsertParameters.Add("@PhotoPath", TypeCode.String, FileName);
    SqlDataSource1.InsertParameters.Add("@ClassName", TypeCode.String, StudentClassName);
    SqlDataSource1.Insert();
  }  if (e.CommandName == "Update")
  {
    string StudentTitle = ((TextBox)GridView1.Rows[GridView1.EditIndex].FindControl("uTitle")).Text;
    string StudentBirthDay = ((TextBox)
      GridView1.Rows[GridView1.EditIndex].FindControl("uBirthDay")).Text;
    bool StudentGender = ((RadioButtonList)
      GridView1.Rows[GridView1.EditIndex].FindControl("uGender")).SelectedValue == "男" ? true : false;
    string StudentClassName = ((DropDownList)
      GridView1.Rows[GridView1.EditIndex].FindControl("uClassName")).SelectedValue;
    string StudentID = GridView1.DataKeys[GridView1.EditIndex].Value.ToString();
    String FileName = "";
    string sql = "";
    String PhotoPath = "";
    bool HasFileUploaded = false;    FileUpload oUpload = (FileUpload)GridView1.Rows[GridView1.EditIndex].FindControl("uPhoto");
    if (oUpload.HasFile)
    {
      PhotoPath = Guid.NewGuid().ToString("D") + System.IO.Path.GetExtension(oUpload.FileName);
      oUpload.SaveAs(Server.MapPath("~") + "/Upload/" + PhotoPath);
      HasFileUploaded = true;
    }    if (HasFileUploaded)
    {
      sql = "Update Student Set Title=@Title,BirthDay = @BirthDay,";
      sql += "Gender=@Gender,PhotoPath=@PhotoPath,ClassName=@ClassName Where id=@id";
    }
    else
    {
      sql = "Update Student Set Title=@Title,BirthDay = @BirthDay," ;
      sql += "Gender=@Gender,ClassName=@ClassName Where id=@id";
    }
    SqlDataSource1.UpdateCommand = sql;
    SqlDataSource1.UpdateCommandType = SqlDataSourceCommandType.Text;    SqlDataSource1.UpdateParameters.Add("@Title", TypeCode.String, StudentTitle);
    SqlDataSource1.UpdateParameters.Add("@BirthDay", TypeCode.DateTime, StudentBirthDay);
    SqlDataSource1.UpdateParameters.Add("@Gender", TypeCode.Boolean, StudentGender.ToString());
    if (HasFileUploaded)
    {
      SqlDataSource1.UpdateParameters.Add("@PhotoPath", TypeCode.String, PhotoPath);
    }
    SqlDataSource1.UpdateParameters.Add("@ClassName", TypeCode.String, StudentClassName);
    SqlDataSource1.UpdateParameters.Add("@id", TypeCode.Int32, StudentID);    SqlDataSource1.Update();
  }
}  
</script><html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>GridView 插入、删除、修改的例子</title>
</head>
<body>
<form id="form1" runat="server">
  <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="id"
    AllowPaging="true" AllowSorting="true" PageSize="6" DataSourceID="SqlDataSource1"
    OnRowDataBound="GridView1_RowDataBound" ShowFooter="true"
    OnRowCommand="GridView1_RowCommand">
    <Columns>
      <asp:BoundField DataField="id" HeaderText="id" InsertVisible="False" ReadOnly="True"
        Visible="false" SortExpression="id" />
      <asp:TemplateField HeaderText="姓名" SortExpression="Title">
        <ItemTemplate>
          <%#Eval("Title") %>
        </ItemTemplate>
        <EditItemTemplate>
          <asp:TextBox ID="uTitle" runat="server" Text='<%#Eval("Title") %>'></asp:TextBox>
        </EditItemTemplate>
        <FooterTemplate>
          <asp:TextBox ID="NewTitle" runat="server"></asp:TextBox>
        </FooterTemplate>
      </asp:TemplateField>
      <asp:TemplateField HeaderText="生日" SortExpression="BirthDay">
        <ItemTemplate>
          <%#Eval("BirthDay", "{0:yyyy年M月d日}")%>
        </ItemTemplate>
        <EditItemTemplate>
          <asp:TextBox ID="uBirthDay" runat="server" Text='<%#Eval("BirthDay", "{0:yyyy-M-d}")%> '/>
        </EditItemTemplate>
        <FooterTemplate>
          <asp:TextBox ID="NewBirthDay" runat="server"></asp:TextBox>
        </FooterTemplate>
      </asp:TemplateField>
      <asp:TemplateField HeaderText="性别" SortExpression="Gender">
        <ItemTemplate>
          <%#(Eval("Gender")).ToString() =="True"?"男":"女"%>
        </ItemTemplate>
        <EditItemTemplate>
          <asp:Label ID="g" Text='<%#(Eval("Gender")).ToString() =="True"?"男":"女"%>'
            Visible="false" runat="server"></asp:Label>
          <asp:RadioButtonList ID="uGender" runat="server" RepeatDirection="Horizontal">
            <asp:ListItem Text="男"></asp:ListItem>
            <asp:ListItem Text="女"></asp:ListItem>
          </asp:RadioButtonList>
        </EditItemTemplate>
        <FooterTemplate>
          <asp:RadioButtonList ID="NewGender" runat="server" RepeatDirection="Horizontal">
            <asp:ListItem Selected="true" Text="男"></asp:ListItem>
            <asp:ListItem Text="女"></asp:ListItem>
          </asp:RadioButtonList>
        </FooterTemplate>
      </asp:TemplateField>
      <asp:TemplateField HeaderText="年级">
        <ItemTemplate>
          <%#Eval("ClassName")%>
        </ItemTemplate>
        <EditItemTemplate>
          <asp:DropDownList ID="uClassName" runat="server">
            <asp:ListItem Text="小学" Value="小学"></asp:ListItem>
            <asp:ListItem Text="中学" Value="中学"></asp:ListItem>
            <asp:ListItem Text="高中" Value="高中"></asp:ListItem>
            <asp:ListItem Text="大学" Value="大学"></asp:ListItem>
          </asp:DropDownList>
        </EditItemTemplate>
        <FooterTemplate>
          <asp:DropDownList ID="NewClassName" runat="server">
            <asp:ListItem Text="小学" Value="小学"></asp:ListItem>
            <asp:ListItem Text="中学" Value="中学"></asp:ListItem>
            <asp:ListItem Text="高中" Value="高中"></asp:ListItem>
            <asp:ListItem Text="大学" Value="大学"></asp:ListItem>
          </asp:DropDownList>
        </FooterTemplate>
      </asp:TemplateField>
      <asp:TemplateField HeaderText="照片">
        <ItemTemplate>
          <%# GetUserPhoto(Eval("PhotoPath")) %>
        </ItemTemplate>
        <EditItemTemplate>
          <asp:FileUpload ID="uPhoto" runat="server" />
        </EditItemTemplate>
        <FooterTemplate>
          <asp:FileUpload ID="AddPhoto" runat="server" />
        </FooterTemplate>
      </asp:TemplateField>
      <asp:CommandField ButtonType="Button" ShowCancelButton="true" ShowDeleteButton="true"
        ShowEditButton="true" CancelText="取消" DeleteText="删除" UpdateText="更新" 
        EditText="修改" HeaderText="操作" InsertVisible="false" 
        ShowInsertButton="true" NewText="添加学生" />
    </Columns>
  </asp:GridView>
  <asp:SqlDataSource ID="SqlDataSource1" runat="server" ProviderName="System.Data.OleDb"
    ConnectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|\ASPNET20Book.mdb;"
    SelectCommand="SELECT * FROM [Student] ORDER BY [id] DESC" DataSourceMode="DataSet"
    DeleteCommand="Delete from Student Where id=@id">
    <DeleteParameters>
      <asp:Parameter Name="id" Type="Int32" />
    </DeleteParameters>
  </asp:SqlDataSource>
  <asp:Label ID="ErrorMsg" runat="server" ForeColor="red"></asp:Label>
</form>
</body>
</html>

Answer 5

另外一种完整的实现方法http://dotnet.aspx.cc/file/Add-Delete-Update-Edit-Data-With-Paging-in-GridView.aspx

Answer 6

for (int row = 0; row < GvUpdateApply.Rows.Count; row++)
            {
                TextBox tb = (TextBox)GvUpdateApply.Rows[row].Cells[0].FindControl("txtcardid");
                。
            }这样，不管你怎么取控件都取的出来

Answer 7

自己搞定啦。后台弄2个方法就OK了。一个放回false一个返回true。。然后Checked='<%# 方法(Eval("XXX")) %>'   这方法可能比较笨。不过效果还是做出来了。还是谢谢各位啦

Answer 8

如果行的话我也不用来问了。这个只能取出Item里面的控件。Edit里面的取不出来的

Answer 9

呵呵。我已经说啦。不用事件的。用事件的话RowUpdating事件是可以拿到的。