如何更新gridview中的值？

Question

我在.aspx頁面中一個方格，就像name，id，role三個文本字段，也有一個編輯按鈕，你點擊該行的值將在txtName的，txtid顯示，txtroll

該值我想更新並插入數據庫。

Answer 1

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e) 
{ 
    if (e.CommandName == "Update") 
    { 
     string uname = ""; 
     int index = Convert.ToInt32(e.CommandArgument); 
     GridViewRow row = GridView1.Rows[index]; 
     TextBox txtbox1_val = (TextBox)row.FindControl("TxtChangeActive"); 
     uname = Server.HtmlDecode(row.Cells[1].Text.ToString()); 
     string upd_query = "update login set active='" + txtbox1_val.Text + "' where uname='" + uname + "' "; 
     SqlConnection con = new SqlConnection(conn); 
     con.Open(); 
     SqlCommand cmd = new SqlCommand(upd_query, con); 
     cmd.ExecuteNonQuery(); 

     string query_login = "select * from Login"; 
     SqlDataAdapter da_login = new SqlDataAdapter(query_login, con); 
     DataSet ds_login = new DataSet(); 
     da_login.Fill(ds_login); 
     GridView1.DataSource = ds_login; 
     GridView1.DataBind(); 
    } 
} 
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) 
{ 

} 

在設計頁面

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" OnRowCommand="GridView1_RowCommand" 
    AlternatingRowStyle-BackColor="#006699" 
     AlternatingRowStyle-ForeColor="#FFFFFF" onrowupdating="GridView1_RowUpdating"> 
    <Columns > 

    <asp:BoundField HeaderText="Name" DataField="uname" /> 
    <asp:BoundField HeaderText="Pass" DataField="upass"/> 
    <asp:TemplateField> 
    <HeaderTemplate>Active</HeaderTemplate> 
    <ItemTemplate > 
    <asp:TextBox ID="TxtChangeActive" runat="server" Text='<%#Eval("active")%>'></asp:TextBox> 
    </ItemTemplate> 
    </asp:TemplateField> 
    <asp:ButtonField CommandName="Update" Text="Update" /> 
    </Columns> 
    </asp:GridView>