c#winform 的dataset的datatable中怎么手动添加行

========== 方法一

DataTable tblDatas = newDataTable("Datas")

DataColumn dc = null

//赋值给dc，是便于对每一个datacolumn的 *** 作

dc =tblDatas.Columns.Add("ID",Type.GetType("System.Int32"))

dc.AutoIncrement= true//自动增加

dc.AutoIncrementSeed = 1//起始为1

dc.AutoIncrementStep = 1//步长为1

dc.AllowDBNull = false//

dc = tblDatas.Columns.Add("Product",Type.GetType("System.String"))

dc = tblDatas.Columns.Add("Version",Type.GetType("System.String"))

dc = tblDatas.Columns.Add("Description",Type.GetType("System.String"))

DataRow newRow

newRow = tblDatas.NewRow()

newRow["Product"] = "大话西游"

newRow["Version"] = "2.0"

newRow["Description"] = "我很喜欢"

tblDatas.Rows.Add(newRow)

newRow = tblDatas.NewRow()

newRow["Product"] = "梦幻西游"

newRow["Version"] = "3.0"

newRow["Description"] = "比大话更幼稚"

tblDatas.Rows.Add(newRow)

========== 方法二

DataTable tblDatas = newDataTable("Datas")

tblDatas.Columns.Add("ID", Type.GetType("System.Int32"))

tblDatas.Columns[0].AutoIncrement = true

tblDatas.Columns[0].AutoIncrementSeed = 1

tblDatas.Columns[0].AutoIncrementStep = 1

tblDatas.Columns.Add("Product",Type.GetType("System.String"))

tblDatas.Columns.Add("Version",Type.GetType("System.String"))

tblDatas.Columns.Add("Description",Type.GetType("System.String"))

tblDatas.Rows.Add(newobject[]{null,"a","b","c"})

tblDatas.Rows.Add(newobject[] { null, "a", "b", "c" })

tblDatas.Rows.Add(new object[] { null, "a", "b", "c" })

tblDatas.Rows.Add(new object[] { null, "a", "b", "c" })

tblDatas.Rows.Add(new object[] { null, "a", "b", "c" })

========== 方法三

DataTable table = new DataTable ()

//创建table的第一列

DataColumn priceColumn = new DataColumn()

//该列的数据类型

priceColumn.DataType = System.Type.GetType("System.Decimal")

//该列得名称

priceColumn.ColumnName = "price"

//该列得默认值

priceColumn.DefaultValue =50

// 创建table的第二列

DataColumn taxColumn = new DataColumn()

taxColumn.DataType = System.Type.GetType("System.Decimal")

//列名

taxColumn.ColumnName = "tax"

//设置该列得表达式，用于计算列中的值或创建聚合列

taxColumn.expression_r_r = "price *0.0862"

// Create third column.

DataColumn totalColumn = new DataColumn()

totalColumn.DataType = System.Type.GetType("System.Decimal")

totalColumn.ColumnName = "total"

//该列的表达式，值是得到的是第一列和第二列值得和

totalColumn.expression_r_r = "price + tax"

// 将所有的列添加到table上

table.Columns.Add(priceColumn)

table.Columns.Add(taxColumn)

table.Columns.Add(totalColumn)

//创建一行

DataRow row = table.NewRow()

//将此行添加到table中

table.Rows.Add(row)

//将table放在试图中

DataViewview = new DataView(table)

dg.DataSource = view

dg.DataBind()

应该是向DataSet中的DataTable中添加一行吧？DataRow dr = ds.Tables[ "test "].NewRow()

dr[ "test_id "] = "0 "

dr[ "test_name "] = "测试 "

ds.Tables[ "test "].Rows.InsertAt(dr, 0)

上面是插入，如果是在后面添加，这样

ds.Tables[ "test "].Rows.Add(dr)

删除数据后，要重新绑定数据源

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