C# 如何隐藏数据表中的列
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How to hide column in data table
提问by daidai
I have DataTablewhich I filled using an SQL Query. Then I filled the GridViewwith the DataTable.
我有DataTable使用 SQL 查询填充的内容。然后我GridView用DataTable.
DataTable table = new DataTable();
table.Load(reader);
gvAktivne.DataSource = table;
gvAktivne.DataBind();
This works fine but now I want to hide the first column. When I add this:
这工作正常，但现在我想隐藏第一列。当我添加这个时：
gvAktivne.Columns[0].Visible = false;
I get an IndexOutOfRangeexception.
Does anybody have an idea how to fix this?
我得到一个IndexOutOfRange例外。有人知道如何解决这个问题吗？
回答by Mike Perrenoud
Based on the problem statement it appears you have AutoGenerateColumnsset to true. This is going to be problematic when you want to hide columns. You need to make sure that you issue that line of code afterthe DataBind()and I would do it in OnPreRender.
基于问题陈述看来你已经AutoGenerateColumns设置true。当您想隐藏列时，这将是有问题的。你需要确保你发出该行代码后的DataBind()，我会做它OnPreRender。
protected override void OnPreRender(EventArgs e)
{
base.OnPreRender(e);
gvAktivne.Columns[0].Visible = false;
}
回答by bala
Try this:
尝试这个：
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
e.Row.Cells[0].Visible = false;
}
回答by Linh Vu
This may work for you:
这可能对您有用：
DataTable data;
data.Columns[0].ColumnMapping = MappingType.Hidden;
