尽管我试图理解gridview的删除方法,但我仍然无法确定如何删除一行。我使用相同的gridview来显示4个SQL表。根据选择哪个表,我进入swich case来更改SQLDataSource的SELECT和DELETE命令。我不确定这是否是最佳做法,但SELECT部分起作用。gridview删除问题。不能从gridview删除按钮中删除SQL记录
这是删除部分,我需要一些帮助。
- 我的思维过程对如何实现我的目标是否正确?
- 我必须有OnRowDeleting =“gv1_RowDeleting”否则它给了我一个 错误。这是强制性的吗?
- 这是什么与我的代码不起作用?
.ASPX:
<form id="form1" runat="server">
<div class="listTitle"><% Response.Write(strListTitle); %>
<asp:GridView ID="gv1"
runat="server"
DataKeyNames="id"
CellPadding="2"
AutoGenerateDeleteButton="True"
OnRowDeleting="gv1_RowDeleting"
OnRowDeleted="gv1_deleteItem">
</asp:GridView>
</div>
</form>
</div> <!-- close middle -->
<div id="footer">
<asp:SqlDataSource ID="DS" runat="server" ConnectionString="<%$ ConnectionStrings:conn %>">
<DeleteParameters> <asp:Parameter Name="id"/> </DeleteParameters>
</asp:SqlDataSource>
</div>
.CS文件:
switch (strType)
{
case "servers":
DS.SelectCommand = "SELECT * FROM tbServers";
DS.DeleteCommand = "DELETE FROM tbServers WHERE id = @id";
strListTitle = "Server List";
break;
case "systems":
DS.SelectCommand = "SELECT * FROM tbSystems";
DS.DeleteCommand = "DELETE FROM tbSystems WHERE id = @id";
strListTitle = "System List";
break;
case "itOwners":
DS.SelectCommand = "SELECT * FROM tbITowners";
DS.DeleteCommand = "DELETE FROM tbITowners WHERE id = @id";
strListTitle = "IT Owner List";
break;
case "systemOwners":
DS.SelectCommand = "SELECT tbSystemOwners.id, tbITowners.owner, tbSystems.Systems FROM tbITowners INNER JOIN tbSystemOwners ON tbITowners.id = tbSystemOwners.idITowners INNER JOIN tbSystems ON tbSystemOwners.idSytems = tbSystems.id";
DS.DeleteCommand = "DELETE FROM tbSystemOwners WHERE id = @id";
strListTitle = "System Owner List";
break;
default:
break;
}
gv1.DataSource = DS;
gv1.DataBind();
}
protected void gv1_deleteItem(object sender, GridViewDeletedEventArgs e)
{
// Display whether the delete operation succeeded.
if (e.Exception == null)
{
Response.Write("Row deleted successfully.");
}
else
{
Response.Write("An error occurred while attempting to delete the row.");
e.ExceptionHandled = true;
}
}
protected void gv1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
}
#2是................. –