使用在运行时生成的列创建GridView

Question

我有一个DataTable，其中列是在运行时以编程方式生成的。 然后我将此DataTable绑定到GridView。 我想知道的是我如何创建GridView以适应这一点，如果不可能，我如何将DataTable输出到格式良好的HTML中。

Answer 1

为此，GridView有一个AutogenerateColums属性。 您还可以动态生成列，例如：

VB.NET

Dim tbl As New DataTable
tbl.Columns.Add("ID", GetType(Int32))
tbl.Columns.Add("Name", GetType(String))
tbl.Columns.Add("Birthday", GetType(Date))
Dim pers As DataRow = tbl.NewRow
pers("ID") = 1
pers("Name") = "Tim"
pers("Birthday") = New Date(1973, 6, 9)

使用AutoGenerateColumns让网格生成列本身：

Me.GridView1.AutoGenerateColumns = True
Me.GridView1.DataSource = tbl
Me.GridView1.DataBind()

或动态生成列

For Each col As DataColumn In tbl.Columns
    Dim field As New BoundField
    field.DataField = col.ColumnName
    field.HeaderText = col.ColumnName
    GridView1.Columns.Add(field)
Next

C＃

foreach (DataColumn col in dt.Columns)
{    
    BoundField field = new BoundField();
    field.DataField = col.ColumnName;
    field.HeaderText = col.ColumnName;
    GridView1.Columns.Add(field);
}

Answer 2

您应该能够将DataTable设置为gridview的DataSource。 GridView具有AutoGenerateColumns属性。 在执行绑定之前，请确保将其设置为true或手动预先创建列。

Answer 3

仅仅因为其他答案没有涵盖这一点，这里是如何以编程方式设置带有自定义列的GridView。

    private GridView SetUpGrid()
    {
        GridView GView = new GridView();

        GView .ColumnHeaderToolTip = "MyToolTip";

        GridViewColumn gvc1 = new GridViewColumn();
        gvc1.DisplayMemberBinding = new Binding("Col1Name");
        gvc1.Header = "Column One";
        gvc1.Width = Double.NaN; // Auto-Size
        GView .Columns.Add(gvc1);
        GridViewColumn gvc2 = new GridViewColumn();
        gvc2.DisplayMemberBinding = new Binding("Col2Name");
        gvc2.Header = "Column Two";
        gvc2.Width = Double.NaN;
        GView .Columns.Add(gvc2);
        GridViewColumn gvc3 = new GridViewColumn();
        gvc3.DisplayMemberBinding = new Binding("Col3Name");
        gvc3.Header = "Column Three";
        gvc3.Width = Double.NaN;
        GView .Columns.Add(gvc3);
        GridViewColumn gvc4 = new GridViewColumn();
        gvc4.DisplayMemberBinding = new Binding("Col4Name");
        gvc4.Header = "Column Four";
        gvc4.Width = Double.NaN;
        GView .Columns.Add(gvc4);

        return GView;
    }