sqlcommandbuilder

WinForms DataGridView - update database

由 与世无争的帅哥 提交于 2019-12-18 07:02:20
问题 I know this is a basic function of the DataGridView, but for some reason, I just can't get it to work. I just want the DataGridView on my Windows form to submit any changes made to it to the database when the user clicks the "Save" button. I populate the DataGridView according to a function triggered by a user selection in a DropDownList as follows: using (SqlConnection con = new SqlConnection(conString)) { con.Open(); SqlDataAdapter ruleTableDA = new SqlDataAdapter("SELECT rule.fldFluteType

SQLDataAdapter.Update() not Updating when RowState = Modified

由 ▼魔方 西西 提交于 2019-12-13 03:18:13
问题 I am trying to set up a program that, when a user updates an item description, will update the database upon the save of the form. I have set up everything I have found that is required and yet the adapter never updates. It selects and inserts great but never update. Code as follows: internal void UpdateDB(DataTable Items) { using ( var ItemsAdapter = new SqlDataAdapter("select * from dbo.Items", Properties.Settings.Default.ConnectionString) ) using ( var ItemsCB = new SqlCommandBuilder

SqlCommandBuilder using table name instead of view

由 时光总嘲笑我的痴心妄想 提交于 2019-12-11 07:47:59
问题 I am using a SqlCommandBuilder object to generate update statements from Select statements in a SqlDataAdapter. My problem is that in my Select statement I am selecting from a view called vwUsers. the SqlCommandBuilder object I used generated an update statement for the table Users not the view vwUsers. How can I override that behavior ? (I need it to use the view because this is where the triggers are being executed. We added triggers to the table view instead of the original table) 回答1: I

How to use SQL Command Builder and SQL Data Apdater

由 人盡茶涼 提交于 2019-12-11 04:27:44
问题 I read SQL Command Builder class from http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlcommandbuilder.aspx and I found that I can show update done on dataset/database using select and update command. SQL Command Builder concept is clear if I am using single dataset but what if I want to use two different dataset? Scenario: I am reading values from database into one dataset ds1; which is assign to sql adapter and sql command builder. Now, I am reading only selected values from

ADO.NET CommandBuilder, InsertCommand and Default Constraints

由 会有一股神秘感。 提交于 2019-12-07 09:08:29
问题 I ' am copying data from table A to table B. Table B has a nullable column that has a default constraint value of 0. In general I set values of columns using the following accessor. public object this[string columnName] { get { return DataTable.Rows[CurrentRow][columnName]; } set { DataTable.Rows[CurrentRow][columnName] = value; } } But I do NOT set my nullable column X. When I insert the whole row, the default value is not used. Instead of 0, NULL was inserted for the nullable column.

ADO.NET CommandBuilder, InsertCommand and Default Constraints

由 佐手、 提交于 2019-12-05 12:30:20
I ' am copying data from table A to table B. Table B has a nullable column that has a default constraint value of 0. In general I set values of columns using the following accessor. public object this[string columnName] { get { return DataTable.Rows[CurrentRow][columnName]; } set { DataTable.Rows[CurrentRow][columnName] = value; } } But I do NOT set my nullable column X. When I insert the whole row, the default value is not used. Instead of 0, NULL was inserted for the nullable column. _sqlCommandBuilder = new SqlCommandBuilder(_sqlDataAdapter); _sqlCommandBuilder.ConflictOption =

SqlDataAdapter.update() not updating database

由 天大地大妈咪最大 提交于 2019-12-02 11:39:09
问题 I am searching for (PostId,UserId) into PostLikes table using SqlDataAdapter , if the row is found , I am using SqlCommandBuilder.GetDeleteCommand() to generate the delete instruction and deleting the underlying row, if the row is not found, then I use SqlCommandBuilder.GetInsertCommand() to generate the insert command and inserting the row to the table using SqlDataAdapter.Update() . But the row is not getting inserted to the table in database. Here is what I have done so far SqlConnection

Concurrency violation: the UpdateCommand affected 0 of the expected 1 records. DB concurrencyException was unhandled

由 浪尽此生 提交于 2019-12-02 08:37:56
i have defined 2 datasets and 2 dataAdapters( one for each of the datasets ) . after creating, for each of the 2 dataAdapters i define a SqlCommandBuilder. All is well till here. I can add, modify, erase very ok from the database using dataAdapter1.Update(dataSet1) .. BUT not in this order :erase, add,modify. Here is the code for the first dataset,dataAdapter and sqlCommandBuilder : string sql = "SELECT * From localitati"; da1 = new System.Data.SqlClient.SqlDataAdapter(sql, con); da1.Fill(ds1, "localitati"); cmdBuilder1 = new SqlCommandBuilder(da1); And the second : sql = "SELECT * From

SqlDataAdapter.update() not updating database

由 最后都变了- 提交于 2019-12-02 04:16:55
I am searching for (PostId,UserId) into PostLikes table using SqlDataAdapter , if the row is found , I am using SqlCommandBuilder.GetDeleteCommand() to generate the delete instruction and deleting the underlying row, if the row is not found, then I use SqlCommandBuilder.GetInsertCommand() to generate the insert command and inserting the row to the table using SqlDataAdapter.Update() . But the row is not getting inserted to the table in database. Here is what I have done so far SqlConnection con = new SqlConnection(connectionStrings); SqlDataAdapter sqlDataAdapter=new SqlDataAdapter("select *

WinForms DataGridView - update database

由 故事扮演 提交于 2019-11-29 11:30:41
I know this is a basic function of the DataGridView, but for some reason, I just can't get it to work. I just want the DataGridView on my Windows form to submit any changes made to it to the database when the user clicks the "Save" button. I populate the DataGridView according to a function triggered by a user selection in a DropDownList as follows: using (SqlConnection con = new SqlConnection(conString)) { con.Open(); SqlDataAdapter ruleTableDA = new SqlDataAdapter("SELECT rule.fldFluteType AS [Flute], rule.fldKnife AS [Knife], rule.fldScore AS [Score], rule.fldLowKnife AS [Low Knife], rule
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