Question

我有一个infragistics网格，可在下拉列表更改时获取数据 1-我希望每次网格加载数据时都隐藏最后一列 2-我也想根据数据更新标题

问题我正在尝试

     protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        EntityName.Text = DropDownList1.SelectedItem.Text;
        string entity = "t_" + DropDownList1.SelectedItem.Text;
        String strConnString = ConfigurationManager.ConnectionStrings["LiveLeaseConnectionString"].ConnectionString;
        SqlConnection con = new SqlConnection(strConnString);
        SqlCommand cmd = new SqlCommand("p_DataList_ByRegardingObject", con);
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.Parameters.AddWithValue("@RegardingObjectName", entity);
        SqlDataAdapter sqlDataAdapter = new SqlDataAdapter(cmd);
        DataTable dt = new DataTable();
        sqlDataAdapter.Fill(dt);
        this.EntityGrid.DataSource = dt;
        this.EntityGrid.Columns[6].Hidden = true;

它抛出null引用错误，并且每次加载data.data时都不会更新列名.data正在刷新但不是列名。这是我的aspx

    <asp:DropDownList ID="DropDownList1" AutoPostBack="true" runat="server" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged">
   <asp:ListItem>Select Entity</asp:ListItem>
</asp:DropDownList>
<asp:Label runat="server" ID="EntityName"></asp:Label>
<ig:WebScriptManager ID="WebScriptManager1" runat="server"></ig:WebScriptManager>
<ig:WebDataGrid ID="EntityGrid" runat="server"  Width="100%" Height="50%" StyleSetName="Claymation" >

    <Behaviors>
        <ig:Sorting>
        </ig:Sorting>

    </Behaviors>
    <ClientEvents Click="NavigateOnClick" />
</ig:WebDataGrid>

Answer 1

如果您的AutogenerateColumns为True，则网格列集合将为空。诀窍是通过Grid Rows到达列。

绑定网格后尝试：

this.EntityGrid.Rows[0].Items[6].Column.Hidden = true;

确保网格至少有一行。

将列隐藏在动态infragistics网格中并更新标题

1 个答案: