DevExpress ASPxGridView 使用文档二：列
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-- ASPxGridView 列
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基本列(GridViewDataColumn)
<dxwgv:GridViewDataColumn FieldName="Country" VisibleIndex="5" />
其他列
<dx:GridViewDataTextColumn /> : 文本列
<dx:GridViewDataMemoColumn /> : 长文本列
<dx:GridViewDataImageColumn /> : 图像列
<dx:GridViewDataBinaryImageColumn /> : 二进制图像列
<dx:GridViewDataDateColumn /> : 日期列
<dx:GridViewDataTimeEditColumn /> : 时间列
<dx:GridViewDataComboBoxColumn /> : 组合框列
<dx:GridViewDataDropDownEditColumn /> : 下拉框编辑列？
<dx:GridViewCommandColumn /> : 命令按钮列
<dx:GridViewDataButtonEditColumn /> : 编辑按钮列？
<dx:GridViewDataCheckColumn /> : 复选框列
<dx:GridViewDataColorEditColumn /> : 色彩列
<dx:GridViewDataHyperLinkColumn /> : 超链接列
<dx:GridViewDataProgressBarColumn /> : 进度条列
<dx:GridViewDataSpinEditColumn /> : SpinEdit列
长文本列（GridViewDataMemoColumn）
编辑时展现为多行文本框
<dx:GridViewDataMemoColumn FieldName="ED_CMT" Caption="政企部核对结果"
EditCellStyle-BackColor="Yellow"
PropertiesMemoEdit-Rows="4"
EditFormSettings-ColumnSpan="2"
/>
超链接列(GridViewDataHyperLinkColumn)
<dx:GridViewDataHyperLinkColumn FieldName="ArticleId" Caption="查看" >
<PropertiesHyperLinkEdit Text="查看" TextFormatString="" />
</dx:GridViewDataHyperLinkColumn>
组合框列（GridViewDataComboBoxColumn）
<dx:ASPxGridView OnCellEditorInitialize="grid_CellEditorInitialize">
<dxwgv:GridViewDataComboBoxColumn FieldName="City" VisibleIndex="2">
<PropertiesComboBox EnableSynchronization="False" EnableIncrementalFiltering="True" DropDownStyle="DropDown" />
</dxwgv:GridViewDataComboBoxColumn>
</dx:ASPxGridView>
protected void grid_CellEditorInitialize(object sender, ASPxGridViewEditorEventArgs e)
{
// 用下拉框展示国家下的所有城市
if(grid.IsEditing && e.Column.FieldName != "City" && !grid.IsNewRowEditing)
{
ASPxComboBox combo = e.Editor as ASPxComboBox;
string country = (string)grid.GetRowValuesByKeyValue(e.KeyValue, "Country");
FillCityCombo(combo, country);
}
}
命令按钮列（GridViewCommandColumn）
标准按钮
<dx:ASPxGridView runat="server" KeyFieldName="ID"
OnRowDeleting="gv_RowDeleting" OnRowUpdating="gv_RowUpdating" OnRowInserting="gv_RowInserting"
<Columns>
<dxwgv:GridViewCommandColumn>
<EditButton Visible="True" Text="修改" />
<DeleteButton Visible="true" Text="删除" />
<NewButton Visible="True" Text="新建" />
<CancelButton Visible="true" Text="取消" />
<UpdateButton Visible="true" Text="保存" />
<ClearFilterButton Visible="true" Text="取消过滤" />
</dxwgv:GridViewCommandColumn>
</Columns>
</dx:ASPxGridView>
代码详见《ASPxGridView.DataBind》
复选框列
<dxwgv:GridViewCommandColumn ShowSelectCheckbox="True"/>
<dxwgv:GridViewCommandColumn ShowSelectCheckbox="True">
<HeaderTemplate>
<input type="checkbox" onclick="grid.SelectAllRowsOnPage(this.checked);" title="选择/放弃选择本页的所有行" />
</HeaderTemplate>
<HeaderStyle HorizontalAlign="Center" />
</dxwgv:GridViewCommandColumn>
自定义按钮
“删除”按钮
<dx:GridViewCommandColumn Caption="删除">
<CustomButtons>
<dx:GridViewCommandColumnCustomButton ID="DeleteFile" Text="删除" />
</CustomButtons>
</dx:GridViewCommandColumn>
protected void gv_CustomButtonCallback(object sender, ASPxGridViewCustomButtonCallbackEventArgs e)
{
if (e.ButtonID == "DeleteFile")
{
long fileId = Convert.ToInt64(gv.GetRowValues(e.VisibleIndex, "FileId"));
string fileName = gv.GetRowValues(e.VisibleIndex, "FileName").ToString();
string filePath = Common.Config.Path.PhysicalUploadFolder + gv.GetRowValues(e.VisibleIndex, "FilePath").ToString();
System.IO.File.Delete(filePath);
using (DbFile db = new DbFile())
db.DelFile(fileId);
ShowData(this.FileBatchId);
}
}
“复制行”按钮
<dx:ASPxGridView runat="server" OnCustomButtonCallback="grid_CustomButtonCallback">
<Columns>
<dxwgv:GridViewCommandColumn VisibleIndex="0">
<CustomButtons>
<dxwgv:GridViewCommandColumnCustomButton Text="复制行" ID="Copy" />
</CustomButtons>
</dxwgv:GridViewCommandColumn>
</Columns>
</dx:ASPxGridView>
Hashtable copiedValues;
protected void grid_CustomButtonCallback(object sender, ASPxGridViewCustomButtonCallbackEventArgs e)
{
if(e.ButtonID == "Copy")
{
copiedValues = new Hashtable();
foreach(string fieldName in copiedFields)
copiedValues[fieldName] = grid.GetRowValues(e.VisibleIndex, fieldName);
grid.AddNewRow();
}
}
protected void grid_InitNewRow(object sender, DevExpress.Web.Data.ASPxDataInitNewRowEventArgs e)
{
if(copiedValues != null)
foreach(string fieldName in copiedFields)
e.NewValues[fieldName] = copiedValues[fieldName];
}
非绑定列（GridViewDataTextColumn）
<dxwgv:GridViewDataTextColumn FieldName="Total" UnboundType="Decimal" />
protected void grid_CustomUnboundColumnData(object sender, DevExpress.Web.ASPxGridView.ASPxGridViewColumnDataEventArgs e)
{
// Total = UnitPrice * Quantity
if(e.Column.FieldName == "Total")
{
decimal price = (decimal)e.GetListSourceFieldValue("UnitPrice");
int quantity = Convert.ToInt32(e.GetListSourceFieldValue("Quantity"));
e.Value = price * quantity;
}
}
模板列（GridViewDataTextColumn）
onhtmlrowcreated="grid_HtmlRowCreated"
<dxwgv:GridViewDataTextColumn Name="Percent" Caption="Change" FieldName="Change">
<DataItemTemplate>
<asp:Image ID="changeImage" runat="server" ImageUrl="~/Images/arGreen.gif" Visible="false" GenerateEmptyAlternateText="True" />
<asp:Label ID="changePercent" runat="server" Text="" />
<a href="javascript:void(0);" onclick="OnMoreInfoClick(this, '<%# Container.KeyValue %>')">更多...</a>
<a href="../pages/download.ashx?path=../uploads/<%#Eval("FilePath")%>&name=<%#Eval("FileName") %> " >下载</a>
</DataItemTemplate>
</dxwgv:GridViewDataTextColumn>
protected void grid_HtmlRowCreated(object sender, ASPxGridViewTableRowEventArgs e)
{
if (!grid.IsEditing && e.RowType == DevExpress.Web.ASPxGridView.GridViewRowType.Data)
{
// 操作 Label 控件
Label label = grid.FindRowCellTemplateControl(e.VisibleIndex, null, "changePercent") as Label;
decimal change = (decimal)grid.GetRowValues(e.VisibleIndex, "Change");
label.Text = string.Format("{0:p}", change);
// 操作 Image 控件
System.Web.UI.WebControls.Image img = (System.Web.UI.WebControls.Image)grid.FindRowCellTemplateControl(e.VisibleIndex, null, "changeImage");
img.Visible = false;
if(change != 0)
{
img.Visible = true;
img.ImageUrl = change < 0 ? "~/Images/arRed.gif" : "~/Images/arGreen.gif";
label.ForeColor = change < 0 ? Color.Red : Color.Green;
}
}
}
注：模板列中的事件如何写？手工写事件，如btn.OnClick += ...;
注：视图模板请参考文档《ASPxGridView.Templates》
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-- 定制窗口
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定制窗口（CustomizationWindow）
说明：一个小窗口，展示隐藏的列，可供用户选择，拖动到表格中就会显示，反之则隐藏
展示定制窗口（隐藏列为Region）
<dxwgv:ASPxGridView ID="grid" ClientInstanceName="grid" runat="server" KeyFieldName="CustomerID" >
<Columns>
<dxwgv:GridViewDataColumn FieldName="ContactName" />
<dxwgv:GridViewDataColumn FieldName="CompanyName" />
<dxwgv:GridViewDataColumn FieldName="City" />
<dxwgv:GridViewDataColumn FieldName="Region" Visible="false" />
<dxwgv:GridViewDataColumn FieldName="Country" />
</Columns>
<SettingsCustomizationWindow Enabled="True" />
<ClientSideEvents CustomizationWindowCloseUp="grid_CustomizationWindowCloseUp" />
</dxwgv:ASPxGridView>
在客户端控制显隐定制窗口
function button1_Click(s, e) {
if(grid.IsCustomizationWindowVisible())
grid.HideCustomizationWindow();
else
grid.ShowCustomizationWindow();
UpdateButtonText();
}
function grid_CustomizationWindowCloseUp(s, e) {
UpdateButtonText();
}
function UpdateButtonText() {
var text = grid.IsCustomizationWindowVisible() ? "Hide" : "Show";
text += " Customization Window";
button1.SetText(text);
}
相关的 Client API：
ShowCustomizationWindow()
HideCustomizationWindow()
IsCustomizationWindowVisible()