如何用css隐藏asp：
如何用css隐藏asp：
提问于 2019-03-18 09:06:37
我想用css隐藏我的asp: visible=false字段，但是当我添加css时，我不能访问这些值。所以我试着用css来隐藏它，但是css在BoundFiled中是不允许的，所以我试着添加了Updatepanel，div等等，但是它们是不被允许的。我如何用css隐藏我的BoundField。
我想用css隐藏的代码
<asp:BoundField DataField = "compras_id" HeaderText="Compras ID" HtmlEncode="false" />
<asp:BoundField DataField = "numero_contrato" HeaderText = "Numero contrato" HtmlEncode="false" />
<asp:BoundField DataField="marca" HeaderText="Marca" HtmlEncode="false" />
<asp:BoundField DataField="designacion" HeaderText="Designacion" HtmlEncode="false" />
<asp:BoundField DataField="tipo" HeaderText="Tipo" HtmlEncode="false" />
<asp:BoundField DataField="referencia" HeaderText="Referencia" HtmlEncode="false" />
<asp:BoundField DataField="plazo" HeaderText="Plazo" HtmlEncode="false" />
<asp:BoundField DataField="nombre_proveedor" HeaderText="Proveedor" HtmlEncode="false" />
<asp:BoundField DataField="cantidad_requerida" HeaderText="Cantidad requerida" HtmlEncode="false" />
<asp:BoundField DataField="cantidad_pedida" HeaderText="Cantidad pedida" HtmlEncode="false" />我的css
.myHide
{
display:none;
}这就是为什么我需要隐藏BoundFields这是我的前端
<asp:GridView ID="gvPrimaryGrid" runat="server" AutoGenerateColumns="false" ShowFooter="true" onrowdatabound="gvPrimaryGrid_RowDataBound"
ShowHeaderWhenEmpty="true" AllowPaging="True" OnPageIndexChanging="gridView_PageIndexChanging" DataKeyNames="compras_id"
OnRowCommand="gvPrimaryGrid_RowCommand" OnRowEditing="gvPrimaryGrid_RowEditing" OnRowCancelingEdit="gvPrimaryGrid_RowCancelingEdit"
OnRowUpdating="gvPrimaryGrid_RowUpdating" CellPadding="3" AllowUserToResizeColumns="True" PageSize="5" AllowSorting="true" onsorting="gvPrimaryGrid_Sorting" GridLines="None" CssClass="mGrid" PagerStyle-CssClass="pgr" AlternatingRowStyle-CssClass="alt">
<PagerSettings Mode="Numeric" />
<Columns>
<asp:TemplateField>
<ItemTemplate>
<%--<asp:CheckBox ID="CheckBox1" AutoPostBack="true" EnableViewState="true" runat="server" onclick="Check_Click(this)" OnCheckedChanged="chkRow_CheckChanged" />--%>
<asp:CheckBox ID="chkRow" AutoPostBack="true" runat="server" OnCheckedChanged="chkRow_CheckChanged" />
<%--<asp:CheckBox ID="chkRow" runat="server" />--%>
<asp:ImageButton ImageUrl="~/Images/edit.png" runat="server" CommandName="Edit" ToolTip="Edit" Width="20px" Height="20px"/>
<asp:ImageButton ImageUrl="~/Images/delete.png" runat="server" CommandName="Delete" ToolTip="Delete" Width="20px" Height="20px"/>
</ItemTemplate>
<EditItemTemplate>
<asp:ImageButton ImageUrl="~/Images/save.png" runat="server" CommandName="Update" ToolTip="Update" Width="20px" Height="20px"/>
<asp:ImageButton ImageUrl="~/Images/cancel.png" runat="server" CommandName="Cancel" ToolTip="Cancel" Width="20px" Height="20px"/>
</EditItemTemplate>
<FooterTemplate>
<asp:ImageButton ImageUrl="~/Images/addnew.png" runat="server" CommandName="AddNew" ToolTip="Add New" Width="20px" Height="20px"/>
</FooterTemplate>
</asp:TemplateField>
<asp:BoundField DataField = "compras_id" HeaderText="Compras ID" HtmlEncode="false" />
<asp:BoundField DataField = "numero_contrato" HeaderText = "Numero contrato" HtmlEncode="false" />
<asp:BoundField DataField="marca" HeaderText="Marca" HtmlEncode="false" />
<asp:BoundField DataField="designacion" HeaderText="Designacion" HtmlEncode="false" />
<asp:BoundField DataField="tipo" HeaderText="Tipo" HtmlEncode="false" />
<asp:BoundField DataField="referencia" HeaderText="Referencia" HtmlEncode="false" />
<asp:BoundField DataField="plazo" HeaderText="Plazo" HtmlEncode="false" />
<asp:BoundField DataField="nombre_proveedor" HeaderText="Proveedor" HtmlEncode="false" />
<asp:BoundField DataField="cantidad_requerida" HeaderText="Cantidad requerida" HtmlEncode="false" />
<asp:BoundField DataField="cantidad_pedida" HeaderText="Cantidad pedida" HtmlEncode="false" />
<asp:TemplateField HeaderText="Compras ID" SortExpression="compras_id" Visible="false">
<ItemTemplate>
<asp:Label DataField="compras_id" HtmlEncode="false" ID="lblPurschaseID" CssClass="gridTextbox" Text='<%# Eval("compras_id") %>' runat="server" />
</ItemTemplate>
<%--<EditItemTemplate>
<asp:TextBox CssClass="gridTextbox" ID="txtType" Text='<%# Eval("tipo") %>' runat="server" />
</EditItemTemplate>--%>
<FooterTemplate>
<asp:TextBox CssClass="gridTextbox" ID="txtPurschaseIDFooter" runat="server" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Numero contrato" >
<ItemTemplate>
<asp:Label DataField="numero_contrato" HtmlEncode="false" ID="lblContractNumber" CssClass="gridTextbox" Text='<%# Eval("numero_contrato") %>' runat="server" />
</ItemTemplate>
<EditItemTemplate>
<asp:DropDownList ID="drGridContractID" Runat="server" AutoPostBack="false" OnSelectedIndexChanged="DropDown_SelectedIndexChanged" />
<%-- <asp:TextBox CssClass="gridTextbox" ID="txtSupplier" Text='<%# Eval("nombre_proveedor") %>' runat="server" />--%>
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox CssClass="gridTextbox" ID="txtContractNumberFooter" runat="server" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Marca" SortExpression="marca">
<ItemTemplate>
<asp:Label DataField="Marca" HtmlEncode="false" ID="lblMarca" CssClass="gridTextbox" Text='<%# Eval("marca") %>' runat="server" />
</ItemTemplate>
<%-- <EditItemTemplate>
<asp:TextBox CssClass="gridTextbox" ID="txtBrand" Text='<%# Eval("marca") %>' runat="server" />
</EditItemTemplate>--%>
<FooterTemplate>
<asp:TextBox CssClass="gridTextbox" ID="txtCountryFooter" runat="server" />
</FooterTemplate>
</asp:TemplateField>这是我的后端
private void GetSelectedRows()
{
DataTable dt = new DataTable();
DataTable dt2 = new DataTable();
if (ViewState["SelectedRows"] != null)
{
dt = (DataTable)ViewState["SelectedRows"];
}
else
{
dt = CreateDataTable();
}
//CheckBox chkAll = (CheckBox)gvPrimaryGrid.HeaderRow.Cells[0].FindControl("chkAll");
for (int i = 0; i < gvPrimaryGrid.Rows.Count; i++)
{
/* if (chkAll.Checked)
{
dt = AddRow(gvPrimaryGrid.Rows[i], dt);
}*/
//else
//{
CheckBox chk = ((CheckBox)gvPrimaryGrid.Rows[i].Cells[0].FindControl("chkRow"));
if (chk.Checked)
{
dt2 = AddRow(gvPrimaryGrid.Rows[i], dt);
}
else
{
dt2 = RemoveRow(gvPrimaryGrid.Rows[i], dt);
}
// }
}
ViewState["SelectedRows"] = dt2;
}
private DataTable CreateDataTable()
{
DataTable dt = new DataTable();
dt.Columns.Add("compras_id");
dt.Columns.Add("numero_contrato");
dt.Columns.Add("marca");
dt.Columns.Add("designacion");
dt.Columns.Add("tipo");
dt.Columns.Add("referencia");
dt.Columns.Add("plazo");
dt.Columns.Add("nombre_proveedor");
//dt.Columns.Add("cantidad_requerida");
dt.Columns.Add("cantidad_pedida");
dt.Columns.Add("cantidad_entregada");
dt.AcceptChanges();
return dt;
}
private DataTable AddRow(GridViewRow gvRow, DataTable dt)
{
DataRow[] dr = dt.Select("compras_id = '" + gvRow.Cells[1].Text + "'");
if (dr.Length <= 0)
{
int i = 1;
dt.Rows.Add();
dt.Rows[dt.Rows.Count - 1]["compras_id"] = gvRow.Cells[i++].Text;
dt.Rows[dt.Rows.Count - 1]["numero_contrato"] = gvRow.Cells[i++].Text;
dt.Rows[dt.Rows.Count - 1]["marca"] = gvRow.Cells[i++].Text;
dt.Rows[dt.Rows.Count - 1]["designacion"] = gvRow.Cells[i++].Text;
dt.Rows[dt.Rows.Count - 1]["tipo"] = gvRow.Cells[i++].Text;
dt.Rows[dt.Rows.Count - 1]["referencia"] = gvRow.Cells[i++].Text;
dt.Rows[dt.Rows.Count - 1]["plazo"] = gvRow.Cells[i++].Text;
dt.Rows[dt.Rows.Count - 1]["nombre_proveedor"] = gvRow.Cells[i++].Text;
//dt.Rows[dt.Rows.Count - 1]["cantidad_requerida"] = gvRow.Cells[i++].Text;
dt.Rows[dt.Rows.Count - 1]["cantidad_pedida"] = gvRow.Cells[i++].Text;
dt.Rows[dt.Rows.Count - 1]["cantidad_entregada"] = gvRow.Cells[i++].Text;
dt.AcceptChanges();
}
return dt;
}
private DataTable RemoveRow(GridViewRow gvRow, DataTable dt)
{
DataRow[] dr = dt.Select("compras_id = '" + gvRow.Cells[1].Text + "'");
if (dr.Length > 0)
{
dt.Rows.Remove(dr[0]);
dt.AcceptChanges();
}
return dt;
}
private void BindSecondaryGrid()
{
DataTable dt = (DataTable)ViewState["SelectedRows"];
gvSecondaryGrid.DataSource = dt;
gvSecondaryGrid.DataBind();
}
protected void chkRow_CheckChanged(object sender, EventArgs e)
{
GetSelectedRows();
SetData();
BindSecondaryGrid();
}
private void SetData()
{
CheckBox chkAll = (CheckBox)gvPrimaryGrid.HeaderRow.Cells[0].FindControl("chkAll");
//chkAll.Checked = true;
if (ViewState["SelectedRows"] != null)
{
DataTable dt = (DataTable)ViewState["SelectedRows"];
for (int i = 0; i < gvPrimaryGrid.Rows.Count; i++)
{
CheckBox chk = (CheckBox)gvPrimaryGrid.Rows[i].Cells[0].FindControl("chkRow");
if (chk != null)
{
DataRow[] dr = dt.Select("compras_id = '" + gvPrimaryGrid.Rows[i].Cells[1].Text + "'");
chk.Checked = dr.Length > 0;
//if (!chk.Checked)
//{
// chkAll.Checked = false;
//}
}
}
}
}正如您所看到的，我使用一个会话来存储表中的值，我已经创建了一个包含两个同名列的表用于编辑，并在表和新表之间创建了一个链接，用户可以通过选中第一个表的复选框来添加新行。
回答 1
Stack Overflow用户
发布于 2019-03-18 09:19:36
我会使用模板字段而不是边界字段。
不要忘记，当您将webcontrol上的可见性设置为false时，它们不会呈现给响应
<asp:templatefield>
<itemtemplate>
<span class='myhide'><%# eval("columnname") %></span>
</itemtemplate>
</asp:templatefield>此外，中继器可以让你精确地控制呈现的HTML，这可能会让你得到更好的结果。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/55213520
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