使Gridview列不可见,但仍然访问其数据
本文关键字:访问 数据 Gridview | 更新日期: 2023-09-27 18:02:26
我已经读了很多关于这个的帖子,特别是在这个网站上,但我仍然找不到我想要的东西。我在。cs文件中填充我的Gridview,而不是在。aspx中添加到它的Columns部分。我有两个字段,我希望能够仍然引用,但希望他们不可见。我知道Gridview对这类事情不是特别好……但有没有什么方法能让我做到这一点呢?
cs
protected void searchFill()
{
orderByString = orderByList.SelectedItem.Value;
fieldString = searchTextBox.Text;
string sqlStatement = "SELECT fName AS [First], lName as [Last], addr AS [Address], email AS [Email], phone AS [Phone], ccType AS [Credit Card Type], length AS [Length], IdentityColumn, processed FROM SecureOrders WHERE fName LIKE '%" + fieldString + "%' OR lName LIKE'%" + fieldString + "%' OR addr LIKE'%" + fieldString + "%' OR addr2 LIKE'%" + fieldString + "%' OR city LIKE'%" + fieldString + "%' OR state LIKE'%" + fieldString + "%' OR zip LIKE'%" + fieldString + "%' OR zip LIKE'%" + fieldString + "%' OR country LIKE'%" + fieldString + "%' OR email LIKE'%" + fieldString + "%' OR phone LIKE'%" + fieldString + "%' OR ccType LIKE'%" + fieldString + "%' OR ccNum LIKE'%" + fieldString + "%' OR ccExp LIKE'%" + fieldString + "%' OR cwaSource LIKE'%" + fieldString + "%' OR cwaJoined LIKE'%" + fieldString + "%' OR length LIKE'%" + fieldString + "%' OR delivery LIKE'%" + fieldString + "%' OR price LIKE'%" + fieldString + "%' OR url LIKE'%" + fieldString + "%' ORDER BY " + orderByString;
using (SqlConnection connection = new SqlConnection(connectionString.ToString()))
{
connection.Open();
SqlDataAdapter dataAdapter = new SqlDataAdapter(sqlStatement, connection);
dataAdapter.SelectCommand.Parameters.AddWithValue("@fieldString", fieldString);
dataAdapter.SelectCommand.Parameters.AddWithValue("@orderByString", orderByString);
SqlCommandBuilder commandBuilder = new SqlCommandBuilder(dataAdapter);
DataSet dataSet = new DataSet();
dataAdapter.Fill(dataSet, "SecureOrders");
DataView source = new DataView(dataSet.Tables[0]);
DefaultGrid.DataSource = source;
DefaultGrid.DataBind();
connection.Close();
}
}
是
<asp:GridView ID="DefaultGrid"
runat = "server"
DataKeyNames = "IdentityColumn"
onselectedindexchanged = "DefaultGrid_SelectedIndexChanged"
autogenerateselectbutton = "true"
enableviewstate = "false"
selectedindex="1">
<SelectedRowStyle BackColor="Azure"
forecolor="Black"
font-bold="true" />
<Columns>
<asp:TemplateField HeaderText = "Processed">
<ItemTemplate>
<asp:CheckBox
ID="CheckBoxProcess"
AutoPostBack="true"
Checked='<%#Eval("processed") %>'
OnCheckedChanged="CheckBoxProcess_CheckedChanged"
runat="server"
Enabled="true" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
当你想使用列值时,只需在GridView中使用<%# Eval("ColumnName") %>
。
所有的数据源(在你的例子中是数据集)值都可以在GridView上下文中的DataBinder中使用。
您可以对想要隐藏的值使用HiddenFields。当您可以隐藏控件时,不需要创建整个列。
<asp:HiddenField runat="server" ID="hdf_Identity" Value='<%# Eval("IdentityField") %>' />
当你想找到它们时,只需在gridview行中搜索它们。以下是一些msdn文档,可能会有所帮助。
你可以用display:hidden创建一个css类"HiddenCol"。然后用该类为想要隐藏的列设置样式。