5

我在aspx中使用gridview，我有两个页面注册和details.aspx一旦注册完成它应该转到details.aspx中的详细信息页面我在那个GV中保留了一个gridview我应该使用行命令事件作为一个按钮应该使用编辑按钮显示学生的所有结果，作为我使用项目模板的所有学生的最后一列。但是在行命令事件中，如果用户单击编辑，我不知道要编写的函数，它应该使用用户 ID 进入编辑页面，ID 应该是中午可编辑模式，其他字段可以编辑。

详细信息.aspx

   <asp:GridView ID="GridView3" runat="server" CellPadding="3" ForeColor="#333333" GridLines="None" AutoGenerateColumns="false"  OnRowCommand="GridView3_RowCommand" OnSelectedIndexChanged="GridView3_SelectedIndexChanged">
     <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
         <Columns>
             <asp:BoundField DataField="UserName" HeaderText="UserName" ReadOnly="True"/>
             <asp:BoundField DataField="Password" HeaderText="Password" />
             <asp:BoundField DataField="FirstName" HeaderText="FirstName" />
             <asp:BoundField DataField="LastName" HeaderText="LastName" />
             <asp:BoundField DataField="EMail" HeaderText="Emaid-ID" />
             <asp:BoundField DataField="PhoneNo" HeaderText="Phone Number" />
             <asp:BoundField DataField="Location" HeaderText="Location" />

              <asp:TemplateField ShowHeader="False">
                <ItemTemplate>
                   <asp:Button ID="btnedit" runat="server" Text="Edit" CommandName="Edit" CommandArgument="UserName"/>
                </ItemTemplate>          
             </asp:TemplateField> 
         </Columns>
     <EditRowStyle BackColor="#999999" />
     <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
     <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
     <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
     <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
     <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
     <SortedAscendingCellStyle BackColor="#E9E7E2" />
     <SortedAscendingHeaderStyle BackColor="#506C8C" />
     <SortedDescendingCellStyle BackColor="#FFFDF8" />
     <SortedDescendingHeaderStyle BackColor="#6F8DAE" />
 </asp:GridView>
    </div>
</form>

详细信息.aspx.cs

 protected void Page_Load(object sender, EventArgs e)
 {
    string connection2 = System.Web.Configuration.WebConfigurationManager.ConnectionStrings        ["connection1"].ConnectionString;
    SqlConnection con = new SqlConnection(connection2);
    con.Open();
    SqlCommand cmd = new SqlCommand("select * from User_Information", con);
    SqlDataReader rdr = cmd.ExecuteReader();
    GridView3.DataSource = rdr;
    GridView3.DataBind();
    con.Close();
}
protected void GridView3_RowCommand(object sender, GridViewCommandEventArgs e)
{

}


protected void GridView3_SelectedIndexChanged(object sender, EventArgs e)
{

}

}

4

2 回答 2

7

首先，您的按钮控件CommandArgument属性必须在每一行中具有唯一值：

 <asp:Button ID="btnedit" runat="server" Text="Edit" CommandName="Edit" 
             CommandArgument="<%# ((GridViewRow) Container).RowIndex %>" />

然后在事件背后的代码中，GridView3_RowCommand您将拥有类似于以下代码的内容：

protected void GridView3_RowCommand(object sender, GridViewCommandEventArgs e)
{
    int index = 0;
    GridViewRow row;
    GridView grid = sender as GridView;

    switch (e.CommandName)
    {
        case "Edit":
            index = Convert.ToInt32(e.CommandArgument);
            row = grid.Rows[index];

            //use row to find the selected controls you need for edit, update, delete here
            // e.g. HiddenField value = row.FindControl("hiddenVal") as HiddenField;

            break;
    }
}
于 2014-07-16T06:47:06.617 回答
7

两种方法

方法一

请在标记中更改这些内容

  1. 改变CommandName="EditUserName"
  2. 省略CommandArgument. 我们不需要这个

代码隐藏

protected void GridView3_RowCommand(object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName == "EditUserName")
    {
        //first find the button that got clicked
        var clickedButton = e.CommandSource as Button;
        //find the row of the button
        var clickedRow = clickedButton.NamingContainer as GridViewRow;
        //now as the UserName is in the BoundField, access it using the cell index.
        var clickedUserName = clickedRow.Cells[0].Text;
    }
}

方法二

给一个CommandArgument。你可以给出许多不同的论点，比如这些

  1. CommandArgument="<%# Container.DataItemIndex %>"
  2. CommandArgument="<%# Container.DisplayIndex %>"
  3. CommandArgument="<%# ((GridViewRow) Container).RowIndex %>"（阿里给的那个）

现在在代码中，执行此操作

protected void GridView3_RowCommand(object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName == "EditUserName")
    {            
        var clickedUserName = CustomersTable
            .Rows[Convert.ToInt32(e.CommandArgument)]//find the row with the clicked index
            .Cells[0]//find the index of the UserName cell
            .Text;//grab the text
    }
}

PS：

1.更改 CommandName 的原因是，如果是CommandName="Edit"，它会触发RowEditing事件，这会给你这个错误

GridView 'GridView3' 触发了未处理的事件 RowEditing。

2.将Page_Load代码放在里面if(!IsPostBack)，否则上述方法都不起作用。

于 2014-07-16T10:58:25.243 回答