我有一個infragistics網格,當下拉改變時獲取數據 1-我想隱藏每次網格加載數據時的最後一列 2-我也要根據數據隱藏動態infragistics網格中的列並更新標題
問題 我想
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;
其拋出空引用錯誤,它似乎在每次加載data.data是越來越刷新時間更新列名而不是列標題更新名。 這裏是我的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>
你能告訴我哪一行會拋出異常嗎? – Steve 2013-05-07 18:01:24
steve at this.entitygrid.columns [6] .hidden = true;它會拋出異常 – user2167089 2013-05-07 19:04:09
更新標題是通過清除列完成的。但對於隱藏部分,我知道列是所有實體的url,但它可能不在同一列,所有的時間都在那裏使用此文本隱藏它? – user2167089 2013-05-08 17:57:56