GridView控件的“编辑”，“删除”不可用的问题

最新推荐文章于 2023-10-16 15:20:52 发布

原创最新推荐文章于 2023-10-16 15:20:52 发布 · 1.6k 阅读

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#gridview #控件

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本文介绍了一个关于ASP.NET GridView控件的问题，当页面包含<input>标签时，GridView会失去编辑和删除功能。文章提供了错误代码示例，并通过使用<asp:Button>替代<input>标签来解决问题。

公司网站，前一个工程师留下一个奇怪的问题，一直没有解决，博客上说到的办法也没能解决问题，最终自己找出了小bug，做个记录，也供大家参考！

原因：页面中可能含有<input>标签，使GridView变成文本数据，失去“编辑”，“删除”的功能（猜测，原因其实到底是什么并不能确定，但这样做问题解决了，欢迎知道原因的前辈指出原因）。

解决办法：将<input>的功能用<asp:Button>代替。

错误案例：

Shopping.aspx

<asp:GridView ID="gvqy" runat="server" AutoGenerateColumns="False" DataKeyNames="id"

Style="margin: auto;" OnRowCancelingEdit="gvqy_RowCancelingEdit" OnRowEditing="gvqy_RowEditing"

OnRowUpdating="gvqy_RowUpdating"

Width="99.9%" CellPadding="4" EnableModelValidation="True" ForeColor="#333333" GridLines="Both">

<asp:BoundField DataField="id" HeaderText="编号" SortExpression="id" ReadOnly="True" ItemStyle-Width="7%" />

<asp:BoundField DataField="proname" HeaderText="产品名称" SortExpression="id" ReadOnly="True" ItemStyle-Width="36%" />

<asp:BoundField DataField="permoney" HeaderText="单价（￥）" SortExpression="id" ReadOnly="True" ItemStyle-Width="14%" />

<asp:TemplateField HeaderText="数量" SortExpression="id" ItemStyle-Width="7%">

<asp:Label ID="lblqypx" runat="server" Text='<%# Bind("nums")%>'></asp:Label>

</ItemTemplate>

<asp:TextBox ID="txtNums" runat="server" Text='<%# Bind("nums")%>' Width="50px"></asp:TextBox>

<asp:CompareValidator ID="CompareValidator1" runat="server" ControlToValidate="txtNums"

Display="Dynamic" ErrorMessage="Please enter an integer!" Operator="DataTypeCheck" Type="Integer"

ValidationGroup="nums">Please enter an integer!</asp:CompareValidator>

</EditItemTemplate>

</asp:TemplateField>

<asp:CommandField HeaderText="编辑" ShowEditButton="True" ValidationGroup="nums" ItemStyle-Width="15%">

</asp:CommandField>

<asp:TemplateField HeaderText="删除" ItemStyle-Width="8%">

<asp:LinkButton ID="button1" runat="server" CommandArgument='<%#Eval("id")%>' OnClientClick="return confirm('确定要删除吗？')"

Text="删除" OnClick="buttondel_Click" ValidationGroup="nums" />

</ItemTemplate>

</asp:TemplateField>

</Columns>

</asp:GridView>

<div>

<tr>

<tdcolspan="2" style="text-align:right;">

</td>

</tr>

</table>

Shopping.aspx.cs

//处于编辑状态

protected void gvqy_RowEditing(object sender,GridViewEditEventArgs e)

{

gvqy.EditIndex = e.NewEditIndex;

BindGridView();

}

//取消编辑

protected void gvqy_RowCancelingEdit(object sender,GridViewCancelEditEventArgs e)

{

gvqy.EditIndex = -1;

BindGridView();

}

//执行编辑

protected void gvqy_RowUpdating(object sender,GridViewUpdateEventArgs e)

{

int qyid = gvqy.DataKeys[e.RowIndex][0].GetString().GetInt();

TextBox txtNums = gvqy.Rows[e.RowIndex].FindControl("txtNums")as TextBox;

BLL.TcOrder bbk = new BLL.TcOrder();

Model.TcOrder mbk = new Model.TcOrder();

mbk = bbk.GetModel(qyid);

mbk.Nums = txtNums.Text.GetInt();

bbk.UpdateNum(mbk);

gvqy.EditIndex = -1;

BindGridView();

}

//删除

protected void buttondel_Click(object sender,EventArgs e)

{

LinkButton lb = sender as LinkButton;

int id = lb.CommandArgument.Trim().GetInt();

int[] ids = { 0 };

if (!ids.Contains(id))

{

BLL.TcOrder bbk = new BLL.TcOrder();

bbk.Delete(id);

BindGridView();

}

正确代码：

Shopping.aspx

<asp:GridView ID="gvqy" runat="server" AutoGenerateColumns="False" DataKeyNames="id"

Style="margin: auto;" OnRowCancelingEdit="gvqy_RowCancelingEdit" OnRowEditing="gvqy_RowEditing"

OnRowUpdating="gvqy_RowUpdating"

Width="99.9%" CellPadding="4" EnableModelValidation="True" ForeColor="#333333" GridLines="Both">

<asp:BoundField DataField="id" HeaderText="编号" SortExpression="id" ReadOnly="True" ItemStyle-Width="7%" />

<asp:BoundField DataField="proname" HeaderText="产品名称" SortExpression="id" ReadOnly="True" ItemStyle-Width="36%" />

<asp:BoundField DataField="permoney" HeaderText="单价（￥）" SortExpression="id" ReadOnly="True" ItemStyle-Width="14%" />

<asp:TemplateField HeaderText="数量" SortExpression="id" ItemStyle-Width="7%">

<asp:Label ID="lblqypx" runat="server" Text='<%# Bind("nums")%>'></asp:Label>

</ItemTemplate>

<asp:TextBox ID="txtNums" runat="server" Text='<%# Bind("nums")%>' Width="50px"></asp:TextBox>

<asp:CompareValidator ID="CompareValidator1" runat="server" ControlToValidate="txtNums"

Display="Dynamic" ErrorMessage="Please enter an integer!" Operator="DataTypeCheck" Type="Integer"

ValidationGroup="nums">Please enter an integer!</asp:CompareValidator>

</EditItemTemplate>

</asp:TemplateField>

<asp:CommandField HeaderText="编辑" ShowEditButton="True" ValidationGroup="nums" ItemStyle-Width="15%">

</asp:CommandField>

<asp:TemplateField HeaderText="删除" ItemStyle-Width="8%">

<asp:LinkButton ID="button1" runat="server" CommandArgument='<%#Eval("id")%>' OnClientClick="return confirm('确定要删除吗？')"

Text="删除" OnClick="buttondel_Click" ValidationGroup="nums" />

</ItemTemplate>

</asp:TemplateField>

</Columns>

</asp:GridView>

<div>

<tr>

<tdcolspan="2" style="text-align:right;">

<asp:Button ID="Next" runat="server" Text="创建订单" CssClass="MyBt"

onclick="Next_Click" />

</td>

</tr>

</table>

Shopping.aspx.cs

//处于编辑状态

protected void gvqy_RowEditing(object sender,GridViewEditEventArgs e)

{

gvqy.EditIndex = e.NewEditIndex;

BindGridView();

}

//取消编辑

protected void gvqy_RowCancelingEdit(object sender,GridViewCancelEditEventArgs e)

{

gvqy.EditIndex = -1;

BindGridView();

}

//执行编辑

protected void gvqy_RowUpdating(object sender,GridViewUpdateEventArgs e)

{

int qyid = gvqy.DataKeys[e.RowIndex][0].GetString().GetInt();

TextBox txtNums = gvqy.Rows[e.RowIndex].FindControl("txtNums")as TextBox;

BLL.TcOrder bbk = new BLL.TcOrder();

Model.TcOrder mbk = new Model.TcOrder();

mbk = bbk.GetModel(qyid);

mbk.Nums = txtNums.Text.GetInt();

bbk.UpdateNum(mbk);

gvqy.EditIndex = -1;

BindGridView();

}

//删除

protected void buttondel_Click(object sender,EventArgs e)

{

LinkButton lb = sender as LinkButton;

int id = lb.CommandArgument.Trim().GetInt();

int[] ids = { 0 };

if (!ids.Contains(id))

{

BLL.TcOrder bbk = new BLL.TcOrder();

bbk.Delete(id);

BindGridView();

}

protected void Next_Click(object sender,EventArgs e)

{

Response.Redirect("Step4.aspx",true);

}