Updating data in datagrid
It does seem more intuitive to take this approach however Data Grid Columns are not actually part of the visual tree and only the Binding DPs will actually be set on generated cell elements to inherit Data Grid’s Data Context.This works because internally when the cell is being generated, the Content of the cell will have its layout updated which will make it part of the visual tree and it will have access to the correct Data Context.In any case, please see the code I have listed below for my update Data Grid event. Can you post the Action Query and Retrieve Courses functions?With this code, the DB is updated using the old data in the datagrid prior to the users changes, why is this and how can I take the new data out of the grid after the user makes changes? private void courses Data Grid_Update Command(object source, System. We'll get down to the bottom of it somewhere in here.The controller object takes the data, formulates the appropriate SQL query, and passes it back to a database facade object, whch then performs the action query to update the row with the primary key passed with the new information.The method called here on course Manager also makes a call to the db facade object to retrieve a new copy of the table after the operations are completed and returns a data table, which the UI layer then assigns to the grid and rebinds so that the new grid is shown with the updates. Here's the code for the Update Course method on course Manager: public Data Table Update Course(string username, string school Name, string semester, string course ID, string title, string section) The call to this.Hi, I am trying to use a data grid in a web application in which I have three tiers.The Data Grid is not set up to a data source, or a data adapter, so everytime I make a change I send the cell information to another object which forms an SQL query and makes the query to the DB (actually to a DBFacade object). Data Grid Command Event Args e) Jon Agiato Jon, Without seeing how Update Course works, it is difficult to tell.
With this code, the DB is updated using the old data in the datagrid prior to the users changes, why is this and how can I take the new data out of the grid after the user makes changes? private void courses Data Grid_Update Command(object source, System. Assuming that you have the row index to modify in variable Data Table vehicle = data Source. As a comment, I am interested to know if there is any difference between your version of adding a column and the version I use: For developers facing the same issue, here is how I fixed mine: You can make use of the Set Field method to update the data in the Grid's row. Set Field(4, "Updating the 5th column in the grid"); vehicle. Data Source = data; to work the way I want them to.This section explains how to update the grid's data using the grid's API's.