gridview控件用法介绍

if (!grid.IsEditing && e.RowType == DevExpress.Web.ASPxGridView.GridViewRowType.Data) {

// 操作 Label 控件

Label label = grid.FindRowCellTemplateControl(e.VisibleIndex, null, \ent\as Label;

decimal change = (decimal)grid.GetRowValues(e.VisibleIndex, \ label.Text = string.Format(\change); // 操作 Image 控件

System.Web.UI.WebControls.Image img = (System.Web.UI.WebControls.Image)grid.FindRowCellTemplateControl(e.VisibleIndex, null, \ img.Visible = false; if(change != 0) {

img.Visible = true;

img.ImageUrl = change < 0 ? \: \\

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》

ASPxGridView 事件

RowCreated(创建行数据时触发,类似 GridView 的 DataItemCreate 事件)

protected void grid_HtmlRowCreated(object sender, DevExpress.Web.ASPxGridView.ASPxGridViewTableRowEventArgs e) {

if(e.RowType != DevExpress.Web.ASPxGridView.GridViewRowType.Data) return; // 设置模板列lable控件值

Label label = grid.FindRowCellTemplateControl(e.VisibleIndex, null, \\as Label;

decimal change = (decimal)grid.GetRowValues(e.VisibleIndex, \ label.Text = string.Format(\change); // 设置模板列image控件的图像

System.Web.UI.WebControls.Image img = (System.Web.UI.WebControls.Image)grid.FindRowCellTemplateControl(e.VisibleIndex, null, \

img.Visible = false; if(change != 0) { img.Visible = true;

img.ImageUrl = change < 0 ? \: \ label.ForeColor = change < 0 ? Color.Red : Color.Green; } }

HtmlRowPrepared(行准备?可在此设置行的展示效果,如背景)

protected void grid_HtmlRowPrepared(object sender, ASPxGridViewTableRowEventArgs e) {

bool hasError = e.GetValue(\<= 1; hasError = hasError || e.GetValue(\<= 1; hasError = hasError || !e.GetValue(\ hasError = hasError || (int)e.GetValue(\< 18; DateTime arrival = (DateTime)e.GetValue(\

hasError = hasError || DateTime.Today.Year != arrival.Year || DateTime.Today.Month != arrival.Month; if(hasError) {

e.Row.ForeColor = System.Drawing.Color.Red; } }

UnboundColumnData (非绑定列数据填充)

protected void grid_CustomUnboundColumnData(object sender, DevExpress.Web.ASPxGridView.ASPxGridViewColumnDataEventArgs e) {

if(e.Column.FieldName == \ {

decimal price = (decimal)e.GetListSourceFieldValue(\ int quantity = Convert.ToInt32(e.GetListSourceFieldValue(\ e.Value = price * quantity; } }

CustomColumnDisplayText(定制列文本展示)

protected void grid_CustomColumnDisplayText(object sender, DevExpress.Web.ASPxGridView.ASPxGridViewColumnDisplayTextEventArgs e) {

if(object.Equals(e.Column, grid.Columns[\

e.DisplayText = GetSizeDisplayText(e.Value); }

SummaryDisplayText(合计行文本展示)

protected void grid_SummaryDisplayText(object sender, DevExpress.Web.ASPxGridView.ASPxGridViewSummaryDisplayTextEventArgs e) { if(e.Item.FieldName == \{ e.Text = GetSizeDisplayText(e.Value); } }

HeaderFilterFillItems(自定义过滤器处理逻辑)

protected void grid_HeaderFilterFillItems(object sender, ASPxGridViewHeaderFilterEventArgs e) {

if(object.Equals(e.Column, grid.Columns[\{ PrepareTotalFilterItems(e); return; }

if(object.Equals(e.Column, grid.Columns[\{ PrepareQuantityFilterItems(e); return; } }

--------------------------------------------------------- 回调处理

--------------------------------------------------------- CustomCallback(Ajax 回调处理)

protected void grid_CustomCallback(object sender, ASPxGridViewCustomCallbackEventArgs e) {

int layoutIndex = -1;

if(int.TryParse(e.Parameters, out layoutIndex)) ApplyLayout(layoutIndex); // 更换布局 }

CustomButtonCallback(定制按钮的ajax回调处理)

protected void grid_CustomButtonCallback(object sender, ASPxGridViewCustomButtonCallbackEventArgs e) {

if(e.ButtonID != \return; copiedValues = new Hashtable();

foreach(string fieldName in copiedFields)

copiedValues[fieldName] = grid.GetRowValues(e.VisibleIndex, fieldName);

grid.AddNewRow(); }

--------------------------------------------------------- 编辑视图

--------------------------------------------------------- InitNewRow(新建行的数据初始化处理)

protected void grid_InitNewRow(object sender, DevExpress.Web.Data.ASPxDataInitNewRowEventArgs e) {

if(copiedValues == null) return;

foreach(string fieldName in copiedFields) {

e.NewValues[fieldName] = copiedValues[fieldName]; } }

CellEditorInitialize(编辑器初始化)

protected void grid_CellEditorInitialize(object sender, ASPxGridViewEditorEventArgs e) {

if(grid.IsEditing && !grid.IsNewRowEditing && e.Column.FieldName == \ {

string country = (string)grid.GetRowValuesByKeyValue(e.KeyValue, \ ASPxComboBox combo = e.Editor as ASPxComboBox; FillCityCombo(combo, country);

combo.Callback += new CallbackEventHandlerBase(cmbCity_OnCallback); } }

StartRowEditing(开始编辑)

protected void grid_StartRowEditing(object sender, DevExpress.Web.Data.ASPxStartR

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