我想通过单击"编辑"按钮在相应的文本框中显示我的网格视图详细信息。我只能获取第一行（行[0]）数据，无论是默认还是通过单击其他行。但是我需要通过单击每一行编辑按钮来获取每一行。这是我的设计代码。我正在使用VS 2013和SQL Server 2012。
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Admin.aspx.cs" Inherits="RigoTest.Admin" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<style type="text/css">
.auto-style1 {
width: 50%;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<center>
<asp:GridView ID="gvdetails" runat="server" AutoGenerateColumns="False" CellPadding="4" ForeColor="#333333"
GridLines="None" Width="800px" HorizontalAlign="Center" OnRowEditing="gvdetails_RowEditing" OnRowCommand="gvdetails_RowCommand">
<AlternatingRowStyle BackColor="White" ForeColor="#284775" />
<Columns>
<%--<asp:TemplateField HeaderText="ID" Visible="false">
<EditItemTemplate>
<asp:TextBox ID="txtID" runat="server" Text='<%# Bind("ID") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblID" runat="server" Text='<%# Bind("ID") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Question">
<EditItemTemplate>
<asp:TextBox ID="txtQue" runat="server" Text='<%# Bind("question") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="lblQue" runat="server" Text='<%# Bind("question") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
--%>
<asp:BoundField DataField="ID" HeaderText="ID" Visible="false" />
<asp:BoundField DataField="question" HeaderText="Question" />
<%--<asp:CommandField ShowEditButton="True" HeaderText="Edit2" />--%>
<asp:ButtonField HeaderText="Edit" CommandName="edit" Text="Edit" />
<%--<asp:CommandField CausesValidation="False" HeaderText="Edit2" InsertVisible="False" ShowCancelButton="False" ShowEditButton="True" UpdateText="" />--%>
</Columns>
<EditRowStyle BackColor="#999999" />
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" HorizontalAlign="Left" />
<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>
</center>
</div>
<div style="height: 300px; margin-top: 250px">
<center>
<table width="40%" class="auto-style1">
<tr>
<td>
Add/Edit Question</td>
<td>
</td>
<td> </td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td> </td>
</tr>
<tr>
<td>
<asp:Label ID="Label5" runat="server" Text="Question :"></asp:Label>
</td>
<td>
<asp:TextBox ID="txtquestion" runat="server" Width="295px"></asp:TextBox>
</td>
<td> </td>
</tr>
<tr>
<td>
<asp:Label ID="Label3" runat="server" Text="Option :"></asp:Label>
</td>
<td>
<asp:TextBox ID="txtoption" runat="server" Width="295px"></asp:TextBox>
</td>
<td>
<asp:Button ID="btnadd" runat="server" Text="Add" Width="50px" OnClick="btnadd_Click" />
</td>
</tr>
<tr>
<td> </td>
<td>
<asp:ListBox ID="ListBox1" runat="server" Width="300px"></asp:ListBox>
</td>
<td>
<asp:Button ID="btndelete" runat="server" Text="Delete" Width="50px" OnClick="btndelete_Click" />
<br />
<br />
<asp:Button ID="btnselect" runat="server" Text="Select" Width="50px" OnClick="btnselect_Click" />
</td>
</tr>
<tr>
<td>
<asp:Label ID="Label4" runat="server" Text="Correct Option :"></asp:Label>
</td>
<td>
<asp:TextBox ID="txtcorrectoption" runat="server" Width="295px"></asp:TextBox>
</td>
<td> </td>
</tr>
<tr>
<td>
<br />
<asp:Button ID="btnsave" runat="server" Text="Save" Width="100px" />
</td>
<td> </td>
<td> </td>
</tr>
</table>
</center>
</div>
</form>
</body>
这是我的 ASP.NET 代码
public partial class Admin : System.Web.UI.Page
{
SqlConnection con = new SqlConnection("server = yamma; uid = sa; pwd = /*-; database = rigo");
SqlCommand cmd;
SqlDataAdapter da = new SqlDataAdapter();
DataTable dt = new DataTable();
public static DataTable dtDefault = new DataTable();
public Int64 n;
protected void Page_Load(object sender, EventArgs e)
{
if(!Page.IsPostBack)
{
showdata();
//string EditID = Request.QueryString["EditId"];
}
}
public void showdata()
{
if (con.State == ConnectionState.Closed)
{
con.Open();
}
cmd = new SqlCommand("RigoSelect", con);
cmd.CommandType = CommandType.StoredProcedure;
da.SelectCommand = cmd;
da.Fill(dt);
da.Fill(dtDefault);
gvdetails.DataSource = dt;
gvdetails.DataBind();
}
protected void btnadd_Click(object sender, EventArgs e)
{
ListBox1.Items.Add(txtoption.Text); //to select data from textbox to listbox
}
protected void btndelete_Click(object sender, EventArgs e)
{
string remove = ListBox1.SelectedItem.Text;
ListBox1.Items.Remove(remove);
////clear all items in listbox
//listBox1.Items.Clear();
}
protected void btnselect_Click(object sender, EventArgs e)
{
txtcorrectoption.Text = ListBox1.SelectedItem.Text;
}
protected void gvdetails_RowCommand(object sender, GridViewCommandEventArgs e)
{
//private Int64 n;
//for(int i=0;i<=n;i++)
//{
int id = int.Parse(gvdetails.Rows[0].Cells[0].Text);
DataRow[] dr = null;
dr = dtDefault.Select("ID = '" + id + "'");
txtquestion.Text = dr[0]["question"].ToString();
txtoption.Text = dr[0]["options"].ToString();
//}
showdata();
}
protected void gvdetails_RowEditing(object sender, GridViewEditEventArgs e)
{
// when boundfied is exist in gridview then id can get....thisway
//int id = int.Parse(gvdetails.Rows[e.NewEditIndex].Cells[0].Text);
////Label lbl = (Label)gvdetails.Rows[e.NewEditIndex].Cells[0].FindControl("lblID");
////string id = lbl.Text.Trim();
////int EID = int.Parse(id);
//// Response.Redirect("Admin.aspx?EditId=" + id + "");
//DataRow[] dr = null;
//dr = dtDefault.Select("ID = '" + id + "'");
//txtquestion.Text = dr[0]["question"].ToString();
//txtoption.Text = dr[0]["options"].ToString();
//showdata();
}
}
}
My problem occurs here
protected void gvdetails_RowCommand(object sender, GridViewCommandEventArgs e)
{
//private Int64 n;
//for(int i=0;i<=n;i++)
//{
int id = int.Parse(gvdetails.Rows[0].Cells[0].Text);
DataRow[] dr = null;
dr = dtDefault.Select("ID = '" + id + "'");
txtquestion.Text = dr[0]["question"].ToString();
txtoption.Text = dr[0]["options"].ToString();
//}
showdata();
}
这是我出现的主要问题：
protected void gvdetails_RowCommand(object sender, GridViewCommandEventArgs e)
{
//private Int64 n;
//for(int i=0;i<=n;i++)
//{
int id = int.Parse(gvdetails.Rows[0].Cells[0].Text);
DataRow[] dr = null;
dr = dtDefault.Select("ID = '" + id + "'");
txtquestion.Text = dr[0]["question"].ToString();
txtoption.Text = dr[0]["options"].ToString();
//}
showdata();
}
当我单击仅显示第一行数据的任何行时。我想通过每次单击网格行的相应文本框来获取每一行数据。
我尝试过使用命令字段，但是当尝试在带有添加按钮的列表框中添加选项文本框（txtoption）的数据时，它会自动在网格视图中显示更新，取消选项。
在 gvdetails_RowCommand 事件中，您始终访问 GridView 中的第一行。
int id = int.Parse(gvdetails.Rows[0].Cells[0].Text);
查看这是否有效（引用当前选定的行）：
int id = int.Parse(gvdetails.SelectedRow.Cells[0].Text);
下面是一个示例代码供您参考。希望这有帮助。
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName =="edit")
{
int i = Convert.ToInt32(e.CommandArgument);
YourTextBox1.Text = GridView1.Rows[i].Cells[0].Text;
YourTextBox2.Text = GridView1.Rows[i].Cells[1].Text;
}
}