如何将验证添加到GridView字段？

Question

I have gridview as follows:

<asp:GridView runat="server" ID="gvOverrideData" AutoGenerateColumns="false" AlternatingRowStyle-BackColor="LightGreen" Width="800" OnRowEditing="OverrideGrid_OnRowEditing" OnRowCancelingEdit="OverrideGrid_OnRowCancelingEdit" OnRowUpdating="OverrideGrid_RowUpdating">
    <HeaderStyle BackColor="LightGray" />
    <Columns>
        <asp:TemplateField HeaderText="Path">
            <ItemTemplate>
                <%# GetOverrideTemplatePath(DataBinder.Eval(Container.DataItem, "Path").ToString())
                %>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="FileName" HeaderText="File Name" />
        <asp:BoundField DataField="Extension" HeaderText="File Extension" />
        <asp:BoundField DataField="FileType" HeaderText="File Type" />
        <asp:BoundField DataField="Iteration" HeaderText="Iteration" />
        <asp:CommandField ButtonType="Link" ShowEditButton="true" ShowDeleteButton="true"
        ShowCancelButton="true" />
    </Columns>
</asp:GridView>

I would like to validate the FileType field, so that it only accepts an InDesign, XML, CorelDraw, StaticImage file type, where the extension should be one of

.indd, .tif, .wmf, .idms, .eps, .pdf, .xml, .inds, .emf, .jpg, .cdr, .gif, .ai, .u01

How can I perform this validation check when a user adds/edit?

Answer 1

You can add validate before you bind with DataSource

var expression = "FileType == '.indd' OR FileType == '.tif' OR ..... ";
DataRow[] foundRows;
// Use the Select method to find all rows matching the filter.
var foundRows = table.Select(expression);

You can also Bind with DataView and filter on your DataView

var dataView = new DataView(YourDataTable);
dataView.RowFilter = "FileType == '.indd' OR FileType == '.tif' OR .....";
YourGridView.DataSource = dataView ;