有个DataTable里面的数据，如图:
列 A B C
行 1 2 3
行 1 2 3
行 1 2 3
我想写个方法
/// <summary>
/// 填充dt
/// </summary>
/// <param name="dt">dt名字</param>
/// <param name="Columns">列名</param>
/// <param name="value">列值</param>
/// <param name="i">第几列</param>
/// <returns></returns>
private DataTable getTB(DataTable dt, string Columns,string value,int i)
{
}
这个方法要求可以添加其他列，例如D,E,f....不定，可以添加行A[3]=5或修改B[0]=10等等,请问怎么写？谢谢！
------解决方案--------------------------------------------------------
下面的代码出自msdn：
- C# code
private System.Data.DataSet dataSet;private void MakeDataTables(){ // Run all of the functions. MakeParentTable(); MakeChildTable(); MakeDataRelation(); BindToDataGrid();}private void MakeParentTable(){ // Create a new DataTable. System.Data.DataTable table = new DataTable("ParentTable"); // Declare variables for DataColumn and DataRow objects. DataColumn column; DataRow row; // Create new DataColumn, set DataType, // ColumnName and add to DataTable. column = new DataColumn(); column.DataType = System.Type.GetType("System.Int32"); column.ColumnName = "id"; column.ReadOnly = true; column.Unique = true; // Add the Column to the DataColumnCollection. table.Columns.Add(column); // Create second column. column = new DataColumn(); column.DataType = System.Type.GetType("System.String"); column.ColumnName = "ParentItem"; column.AutoIncrement = false; column.Caption = "ParentItem"; column.ReadOnly = false; column.Unique = false; // Add the column to the table. table.Columns.Add(column); // Make the ID column the primary key column. DataColumn[] PrimaryKeyColumns = new DataColumn[1]; PrimaryKeyColumns[0] = table.Columns["id"]; table.PrimaryKey = PrimaryKeyColumns; // Instantiate the DataSet variable. dataSet = new DataSet(); // Add the new DataTable to the DataSet. dataSet.Tables.Add(table); // Create three new DataRow objects and add // them to the DataTable for (int i = 0; i<= 2; i++) { row = table.NewRow(); row["id"] = i; row["ParentItem"] = "ParentItem " + i; table.Rows.Add(row); }}private void MakeChildTable(){ // Create a new DataTable. DataTable table = new DataTable("childTable"); DataColumn column; DataRow row; // Create first column and add to the DataTable. column = new DataColumn(); column.DataType= System.Type.GetType("System.Int32"); column.ColumnName = "ChildID"; column.AutoIncrement = true; column.Caption = "ID"; column.ReadOnly = true; column.Unique = true; // Add the column to the DataColumnCollection. table.Columns.Add(column); // Create second column. column = new DataColumn(); column.DataType= System.Type.GetType("System.String"); column.ColumnName = "ChildItem"; column.AutoIncrement = false; column.Caption = "ChildItem"; column.ReadOnly = false; column.Unique = false; table.Columns.Add(column); // Create third column. column = new DataColumn(); column.DataType= System.Type.GetType("System.Int32"); column.ColumnName = "ParentID"; column.AutoIncrement = false; column.Caption = "ParentID"; column.ReadOnly = false; column.Unique = false; table.Columns.Add(column); dataSet.Tables.Add(table); // Create three sets of DataRow objects, // five rows each, and add to DataTable. for(int i = 0; i <= 4; i ++) { row = table.NewRow(); row["childID"] = i; row["ChildItem"] = "Item " + i; row["ParentID"] = 0 ; table.Rows.Add(row); } for(int i = 0; i <= 4; i ++) { row = table.NewRow(); row["childID"] = i + 5; row["ChildItem"] = "Item " + i; row["ParentID"] = 1 ; table.Rows.Add(row); } for(int i = 0; i <= 4; i ++) { row = table.NewRow(); row["childID"] = i + 10; row["ChildItem"] = "Item " + i; row["ParentID"] = 2 ; table.Rows.Add(row); }}private void MakeDataRelation(){ // DataRelation requires two DataColumn // (parent and child) and a name. DataColumn parentColumn = dataSet.Tables["ParentTable"].Columns["id"]; DataColumn childColumn = dataSet.Tables["ChildTable"].Columns["ParentID"]; DataRelation relation = new DataRelation("parent2Child", parentColumn, childColumn); dataSet.Tables["ChildTable"].ParentRelations.Add(relation);}private void BindToDataGrid(){ // Instruct the DataGrid to bind to the DataSet, with the // ParentTable as the topmost DataTable. dataGrid1.SetDataBinding(dataSet,"ParentTable");}