Sql server datagridview更新到sql数据库
我在从datagridview更新sql中的表时遇到问题 下面是我如何将数据从sql调用到我的datagrid:Sql server datagridview更新到sql数据库,sql-server,database,datagridview,Sql Server,Database,Datagridview,我在从datagridview更新sql中的表时遇到问题 下面是我如何将数据从sql调用到我的datagrid: string strsql = "select a.Denomination, a.Value, b.Quantity, b.Amount from [Masterfile].[Denomination] a "+ "left join [GEARS-POS].[POS].[CashCount] b "+ "on A.Sequence
string strsql = "select a.Denomination, a.Value, b.Quantity, b.Amount from [Masterfile].[Denomination] a "+
"left join [GEARS-POS].[POS].[CashCount] b "+
"on A.Sequence = B.Sequence order by a.sequence";
dataGridViewEx1.AutoGenerateColumns = false;
dataGridViewEx1.AllowUserToDeleteRows = false;
dataGridViewEx1.AllowUserToAddRows = false;
DataTable dtgt = GearsLibrary.Gears.GetData(strsql, Common.Common.ConnectionString());
BindingSource bSource = new BindingSource();
bSource.DataSource = dtgt;
dataGridViewEx1.DataSource = bSource;
dataGridViewEx1.Columns[0].DataPropertyName = "Denomination";
dataGridViewEx1.Columns[1].DataPropertyName = "Value";
dataGridViewEx1.Columns[2].DataPropertyName = "Quantity";
dataGridViewEx1.Columns[3].DataPropertyName = "Amount";
下面是我如何使用按钮单击事件更新数据库:
string con = "Data Source=WEBSERVER;Initial Catalog=GEARS-POS;User id=sa;Password=123456";
string strsql = "select a.Denomination, a.Value, b.Quantity, b.Amount from [Masterfile].[Denomination] a " +
"left join [GEARS-POS].[POS].[CashCount] b " +
"on A.Sequence = B.Sequence order by a.sequence";
SqlDataAdapter da = new SqlDataAdapter(strsql, con);
SqlCommandBuilder cb = new SqlCommandBuilder(da);
DataTable dt = new DataTable();
da.Update(dt);
每当我单击“更新”按钮时,都不会发生任何事情。它不会更新我的表或任何东西/ 我注意到您使用一个名为“dtgt”的数据表作为数据源,当您想要更新数据时,您使用另一个名为Dt的数据表,因此您应该对同一数据源进行更新。 而是写:
da.Update(dt);
//你必须写:
数据更新(dtgt);
您正在更新事件中使用select语句!!