Question

我在网格视图中显示一些数据，一切正常。但是，我尝试在文本字段中添加搜索按钮，以便用户能够按名称（表格的第一列）过滤数据。因此，例如用户将输入＆＃34; James＆＃34;然后只显示名称为James的条目。这是我的代码：

<asp:Button ID="Button1" runat="server" Text="Filter" OnClick="Button1_Click" />
          <asp:TextBox ID="TextBox1" runat="server" AutoPostBack="true"></asp:TextBox>


       <asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" DataSourceID="ObjectDataSource1" >
        <Columns>
            <asp:BoundField DataField="Name" HeaderText="Name" ReadOnly="True" SortExpression="Name" >
            <HeaderStyle Width="450px" />
            <ItemStyle HorizontalAlign="Center" Height="100px" Width="400px" BorderColor="#CCCCCC" BorderStyle="Solid" BorderWidth="1px" />
            </asp:BoundField>
            <asp:BoundField DataField="Title" HeaderText="Title" ReadOnly="True" SortExpression="Title" >
                <ItemStyle Width="400px" HorizontalAlign="Center" Height="100px" BorderColor="#CCCCCC" BorderStyle="Solid" BorderWidth="1px" />
                </asp:BoundField>

        </Columns>

        <HeaderStyle BackColor="#002d57" Font-Bold="True" ForeColor="White" />
        <PagerStyle BackColor="White" ForeColor="#002756" HorizontalAlign="Left" />
        <RowStyle ForeColor="#002756" />

    </asp:GridView>
   <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" SelectMethod="GetData" TypeName="Test"></asp:ObjectDataSource>

在后面的代码中我尝试了类似的东西，但它仍然显示了表的所有结果，而不是我专门搜索的结果：

  protected void Button1_Click(object sender, EventArgs e)
{
    try
    {
        ((DataTable)GridView1.DataSource).DefaultView.RowFilter = "Name like '%" + textBox1.Text.Trim() + "%' ";
    }
    catch (Exception) { }

}

我有什么建议可以实现这个目标吗？

Answer 1

你也可以这样做

DataView dv = ((DataTable)dataGridView1.DataSource).DefaultView;
dv.RowFilter = "Name LIKE '%" + textBox1.Text + "%'";
dataGridView1.DataSource = dv;
dv.DataBind();

Answer 2

试试这个

((DataTable)GridView1.DataSource).DefaultView.RowFilter.Contains(textBox1.Text);

Answer 3

//绑定gridview

时将DataTable保存在会话中

// Session [＆＃34; Dt_GridView＆＃34;] = Your_datatable;

尝试以下代码

 protected void Button1_Click(object sender, EventArgs e)
    {

        try
        {
            DataTable dt = (DataTable)Session["Dt_GridView"];
            dt.DefaultView.RowFilter = "Name like '%" + textBox1.Text.Trim() + "%' ";
            GridView1.DataSource = dt;
            GridView1.DataBind();
        }
        catch (Exception ex) { }

    }

<强>更新

当您使用ObjectDataSource时，您可以直接调用FilterExpression方法，如下所示

 protected void Button1_Click(object sender, EventArgs e)
        {
            if (TextBox1.Text != "")
            {

                ObjectDataSource1.FilterExpression = "Name LIKE '%" + TextBox1.Text + "%'";

            }

        }

使用文本框过滤GridView

3 个答案: