将新列添加到GridView DevExpress

我从Excel导入工作表。 我需要在网格的最后添加一个新的单元格，其中包含有关空单元格的消息，并将其保存在一个名为msg的数组中;

private void simpleButton1_Click(object sender, System.EventArgs e) { try { OleDbConnection con = new OleDbConnection(); con.ConnectionString = "Provider=Microsoft.Ace.OLEDB.12.0;Data Source=C:\\Users\\pc\\Documents\\Emp.xlsx;Extended Properties=\"Excel 12.0;HDR=Yes\""; con.Open(); DataTable dtSchema; dtSchema = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" }); OleDbCommand Command = new OleDbCommand ("select * FROM [" + dtSchema.Rows[0]["TABLE_NAME"].ToString() + "]", con); OleDbDataAdapter da = new OleDbDataAdapter(Command); DataSet ds = new DataSet (); da.Fill(ds); dataGrid1.DataSource = ds.Tables[0]; } catch (Exception ex) { MessageBox.Show(ex.Message); } string[] msg = new string[50]; for (int i = 0; i < gridView3.RowCount ; i++) { System.Data.DataRow Rows = gridView3.GetDataRow(i); string cellvalue = Rows[0].ToString(); if (cellvalue == "") { msg[0] = "Missing 'First Name'"; } cellvalue = Rows[1].ToString(); if (cellvalue == "") { msg[1] = "Missing 'Father Name'"; } cellvalue = Rows[2].ToString(); if (cellvalue == "") { msg[2] = "Missing 'Last Name'"; } } 

我正在使用XtraGrid控制..如何添加此列添加对不起，我是新的DevExpress谢谢你..

Answer 1

我build议你使用XtraGrid Unbound Columns ，在那里你可以写你的自定义文本。

将UnBound列添加到Xtragrid的示例代码片段：

 using DevExpress.XtraGrid.Views.Base; using DevExpress.XtraGrid.Columns; private void Form1_Load(object sender, System.EventArgs e) { // ... gridControl1.ForceInitialize(); // Create an unbound column. GridColumn unbColumn = gridView1.Columns.AddField("Total"); unbColumn.VisibleIndex = gridView1.Columns.Count; unbColumn.UnboundType = DevExpress.Data.UnboundColumnType.Decimal; // Disable editing. unbColumn.OptionsColumn.AllowEdit = false; // Specify format settings. unbColumn.DisplayFormat.FormatType = DevExpress.Utils.FormatType.Numeric; unbColumn.DisplayFormat.FormatString = "c"; // Customize the appearance settings. unbColumn.AppearanceCell.BackColor = Color.LemonChiffon; } // Returns the total amount for a specific row. decimal getTotalValue(int listSourceRowIndex) { DataRow row = nwindDataSet.Tables["Order Details"].Rows[listSourceRowIndex]; decimal unitPrice = Convert.ToDecimal(row["UnitPrice"]); decimal quantity = Convert.ToDecimal(row["Quantity"]); decimal discount = Convert.ToDecimal(row["Discount"]); return unitPrice * quantity * (1 - discount); } // Provides data for the Total column. private void gridView1_CustomUnboundColumnData(object sender, CustomColumnDataEventArgs e) { if (e.Column.FieldName == "Total" && e.IsGetData) e.Value = getTotalValue(e.ListSourceRowIndex); } 

或者您可以使用CustomColumnDisplayText事件来显示自定义文本Xtragrid。

 using DevExpress.XtraGrid.Views.Base; private void gridView1_CustomColumnDisplayText(object sender, CustomColumnDisplayTextEventArgs e) { if(e.Column.FieldName == "Discount") if(Convert.ToDecimal(e.Value) == 0) e.DisplayText = ""; } 

要知道如何创build列并将其绑定到数据字段 ，请参阅文档：

列和卡字段的概述

 using DevExpress.XtraGrid.Views.Base; ColumnView View = gridControl1.MainView as ColumnView; DialogResult answer = MessageBox.Show("Do you want to create columns for all fields?", "Confirmation", MessageBoxButtons.YesNo, MessageBoxIcon.Question); if (answer == DialogResult.Yes) View.PopulateColumns(); else { string[] fieldNames = new string[] {"ProductID", "ProductName", "QuantityPerUnit", "UnitPrice"}; DevExpress.XtraGrid.Columns.GridColumn column; View.Columns.Clear(); for (int i = 0; i < fieldNames.Length; i++) { column = View.Columns.AddField(fieldNames[i]); column.VisibleIndex = i; } } 

希望这个帮助..